QueryableExtensions.SumAsync Method (System.Data.Entity)

Asynchronously computes the sum of a sequence of Decimal values.

Namespace: System.Data.Entity
Assembly: EntityFramework (in EntityFramework.dll)

Overload List

	Name	Description
	SumAsync(IQueryable<Decimal>^)	Asynchronously computes the sum of a sequence of Decimal values.
	SumAsync(IQueryable<Decimal>^, CancellationToken)	Asynchronously computes the sum of a sequence of Decimal values.
	SumAsync(IQueryable<Double>^)	Asynchronously computes the sum of a sequence of Double values.
	SumAsync(IQueryable<Double>^, CancellationToken)	Asynchronously computes the sum of a sequence of Double values.
	SumAsync(IQueryable<Int32>^)	Asynchronously computes the sum of a sequence of Int32 values.
	SumAsync(IQueryable<Int32>^, CancellationToken)	Asynchronously computes the sum of a sequence of Int32 values.
	SumAsync(IQueryable<Int64>^)	Asynchronously computes the sum of a sequence of Int64 values.
	SumAsync(IQueryable<Int64>^, CancellationToken)	Asynchronously computes the sum of a sequence of Int64 values.
	SumAsync(IQueryable<Nullable<Decimal>>^)	Asynchronously computes the sum of a sequence of nullable Decimal values.
	SumAsync(IQueryable<Nullable<Decimal>>^, CancellationToken)	Asynchronously computes the sum of a sequence of nullable Decimal values.
	SumAsync(IQueryable<Nullable<Double>>^)	Asynchronously computes the sum of a sequence of nullable Double values.
	SumAsync(IQueryable<Nullable<Double>>^, CancellationToken)	Asynchronously computes the sum of a sequence of nullable Double values.
	SumAsync(IQueryable<Nullable<Int32>>^)	Asynchronously computes the sum of a sequence of nullable Int32 values.
	SumAsync(IQueryable<Nullable<Int32>>^, CancellationToken)	Asynchronously computes the sum of a sequence of nullable Int32 values.
	SumAsync(IQueryable<Nullable<Int64>>^)	Asynchronously computes the sum of a sequence of nullable Int64 values.
	SumAsync(IQueryable<Nullable<Int64>>^, CancellationToken)	Asynchronously computes the sum of a sequence of nullable Int64 values.
	SumAsync(IQueryable<Nullable<Single>>^)	Asynchronously computes the sum of a sequence of nullable Single values.
	SumAsync(IQueryable<Nullable<Single>>^, CancellationToken)	Asynchronously computes the sum of a sequence of nullable Single values.
	SumAsync(IQueryable<Single>^)	Asynchronously computes the sum of a sequence of Single values.
	SumAsync(IQueryable<Single>^, CancellationToken)	Asynchronously computes the sum of a sequence of Single values.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Decimal>^>^)	Asynchronously computes the sum of the sequence of Decimal values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Decimal>^>^, CancellationToken)	Asynchronously computes the sum of the sequence of Decimal values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Double>^>^)	Asynchronously computes the sum of the sequence of Double values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Double>^>^, CancellationToken)	Asynchronously computes the sum of the sequence of Double values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Int32>^>^)	Asynchronously computes the sum of the sequence of Int32 values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Int32>^>^, CancellationToken)	Asynchronously computes the sum of the sequence of Int32 values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Int64>^>^)	Asynchronously computes the sum of the sequence of Int64 values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Int64>^>^, CancellationToken)	Asynchronously computes the sum of the sequence of Int64 values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Nullable<Decimal>>^>^)	Asynchronously computes the sum of the sequence of nullable Decimal values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Nullable<Decimal>>^>^, CancellationToken)	Asynchronously computes the sum of the sequence of nullable Decimal values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Nullable<Double>>^>^)	Asynchronously computes the sum of the sequence of nullable Double values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Nullable<Double>>^>^, CancellationToken)	Asynchronously computes the sum of the sequence of nullable Double values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Nullable<Int32>>^>^)	Asynchronously computes the sum of the sequence of nullable Int32 values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Nullable<Int32>>^>^, CancellationToken)	Asynchronously computes the sum of the sequence of nullable Int32 values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Nullable<Int64>>^>^)	Asynchronously computes the sum of the sequence of nullable Int64 values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Nullable<Int64>>^>^, CancellationToken)	Asynchronously computes the sum of the sequence of nullable Int64 values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Nullable<Single>>^>^)	Asynchronously computes the sum of the sequence of nullable Single values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Nullable<Single>>^>^, CancellationToken)	Asynchronously computes the sum of the sequence of nullable Single values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Single>^>^)	Asynchronously computes the sum of the sequence of Single values that is obtained by invoking a projection function on each element of the input sequence.
	SumAsync<TSource>(IQueryable<TSource>^, Expression<Func<TSource, Single>^>^, CancellationToken)	Asynchronously computes the sum of the sequence of Single values that is obtained by invoking a projection function on each element of the input sequence.

QueryableExtensions::SumAsync Method (IQueryable<Decimal>^)

Asynchronously computes the sum of a sequence of Decimal values.

Syntax

public:
[ExtensionAttribute]
static Task<Decimal>^ SumAsync(
	IQueryable<Decimal>^ source
)

Parameters

source: Type: System.Linq::IQueryable<Decimal>^
A sequence of Decimal values to calculate the sum of.

Return Value

Type: System.Threading.Tasks::Task<Decimal>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

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QueryableExtensions::SumAsync Method (IQueryable<Decimal>^, CancellationToken)

Asynchronously computes the sum of a sequence of Decimal values.

Syntax

public:
[ExtensionAttribute]
static Task<Decimal>^ SumAsync(
	IQueryable<Decimal>^ source,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<Decimal>^
A sequence of Decimal values to calculate the sum of.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Decimal>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

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QueryableExtensions::SumAsync Method (IQueryable<Double>^)

Asynchronously computes the sum of a sequence of Double values.

Syntax

public:
[ExtensionAttribute]
static Task<double>^ SumAsync(
	IQueryable<double>^ source
)

Parameters

source: Type: System.Linq::IQueryable<Double>^
A sequence of Double values to calculate the sum of.

Return Value

Type: System.Threading.Tasks::Task<Double>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

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QueryableExtensions::SumAsync Method (IQueryable<Double>^, CancellationToken)

Asynchronously computes the sum of a sequence of Double values.

Syntax

public:
[ExtensionAttribute]
static Task<double>^ SumAsync(
	IQueryable<double>^ source,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<Double>^
A sequence of Double values to calculate the sum of.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Double>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

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QueryableExtensions::SumAsync Method (IQueryable<Int32>^)

Asynchronously computes the sum of a sequence of Int32 values.

Syntax

public:
[ExtensionAttribute]
static Task<int>^ SumAsync(
	IQueryable<int>^ source
)

Parameters

source: Type: System.Linq::IQueryable<Int32>^
A sequence of Int32 values to calculate the sum of.

Return Value

Type: System.Threading.Tasks::Task<Int32>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

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QueryableExtensions::SumAsync Method (IQueryable<Int32>^, CancellationToken)

Asynchronously computes the sum of a sequence of Int32 values.

Syntax

public:
[ExtensionAttribute]
static Task<int>^ SumAsync(
	IQueryable<int>^ source,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<Int32>^
A sequence of Int32 values to calculate the sum of.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Int32>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

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QueryableExtensions::SumAsync Method (IQueryable<Int64>^)

Asynchronously computes the sum of a sequence of Int64 values.

Syntax

public:
[ExtensionAttribute]
static Task<long long>^ SumAsync(
	IQueryable<long long>^ source
)

Parameters

source: Type: System.Linq::IQueryable<Int64>^
A sequence of Int64 values to calculate the sum of.

Return Value

Type: System.Threading.Tasks::Task<Int64>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

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QueryableExtensions::SumAsync Method (IQueryable<Int64>^, CancellationToken)

Asynchronously computes the sum of a sequence of Int64 values.

Syntax

public:
[ExtensionAttribute]
static Task<long long>^ SumAsync(
	IQueryable<long long>^ source,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<Int64>^
A sequence of Int64 values to calculate the sum of.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Int64>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

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QueryableExtensions::SumAsync Method (IQueryable<Nullable<Decimal>>^)

Asynchronously computes the sum of a sequence of nullable Decimal values.

Syntax

public:
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[ExtensionAttribute]
static Task<Nullable<Decimal>>^ SumAsync(
	IQueryable<Nullable<Decimal>>^ source
)

Parameters

source: Type: System.Linq::IQueryable<Nullable<Decimal>>^
A sequence of nullable Decimal values to calculate the sum of.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Decimal>>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

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QueryableExtensions::SumAsync Method (IQueryable<Nullable<Decimal>>^, CancellationToken)

Asynchronously computes the sum of a sequence of nullable Decimal values.

Syntax

public:
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[ExtensionAttribute]
static Task<Nullable<Decimal>>^ SumAsync(
	IQueryable<Nullable<Decimal>>^ source,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<Nullable<Decimal>>^
A sequence of nullable Decimal values to calculate the sum of.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Decimal>>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

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QueryableExtensions::SumAsync Method (IQueryable<Nullable<Double>>^)

Asynchronously computes the sum of a sequence of nullable Double values.

Syntax

public:
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<Nullable<double>>^ SumAsync(
	IQueryable<Nullable<double>>^ source
)

Parameters

source: Type: System.Linq::IQueryable<Nullable<Double>>^
A sequence of nullable Double values to calculate the sum of.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Double>>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync Method (IQueryable<Nullable<Double>>^, CancellationToken)

Asynchronously computes the sum of a sequence of nullable Double values.

Syntax

public:
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[ExtensionAttribute]
static Task<Nullable<double>>^ SumAsync(
	IQueryable<Nullable<double>>^ source,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<Nullable<Double>>^
A sequence of nullable Double values to calculate the sum of.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Double>>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

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QueryableExtensions::SumAsync Method (IQueryable<Nullable<Int32>>^)

Asynchronously computes the sum of a sequence of nullable Int32 values.

Syntax

public:
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<Nullable<int>>^ SumAsync(
	IQueryable<Nullable<int>>^ source
)

Parameters

source: Type: System.Linq::IQueryable<Nullable<Int32>>^
A sequence of nullable Int32 values to calculate the sum of.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Int32>>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync Method (IQueryable<Nullable<Int32>>^, CancellationToken)

Asynchronously computes the sum of a sequence of nullable Int32 values.

Syntax

public:
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<Nullable<int>>^ SumAsync(
	IQueryable<Nullable<int>>^ source,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<Nullable<Int32>>^
A sequence of nullable Int32 values to calculate the sum of.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Int32>>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync Method (IQueryable<Nullable<Int64>>^)

Asynchronously computes the sum of a sequence of nullable Int64 values.

Syntax

public:
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<Nullable<long long>>^ SumAsync(
	IQueryable<Nullable<long long>>^ source
)

Parameters

source: Type: System.Linq::IQueryable<Nullable<Int64>>^
A sequence of nullable Int64 values to calculate the sum of.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Int64>>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync Method (IQueryable<Nullable<Int64>>^, CancellationToken)

Asynchronously computes the sum of a sequence of nullable Int64 values.

Syntax

public:
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<Nullable<long long>>^ SumAsync(
	IQueryable<Nullable<long long>>^ source,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<Nullable<Int64>>^
A sequence of nullable Int64 values to calculate the sum of.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Int64>>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync Method (IQueryable<Nullable<Single>>^)

Asynchronously computes the sum of a sequence of nullable Single values.

Syntax

public:
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<Nullable<float>>^ SumAsync(
	IQueryable<Nullable<float>>^ source
)

Parameters

source: Type: System.Linq::IQueryable<Nullable<Single>>^
A sequence of nullable Single values to calculate the sum of.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Single>>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync Method (IQueryable<Nullable<Single>>^, CancellationToken)

Asynchronously computes the sum of a sequence of nullable Single values.

Syntax

public:
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<Nullable<float>>^ SumAsync(
	IQueryable<Nullable<float>>^ source,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<Nullable<Single>>^
A sequence of nullable Single values to calculate the sum of.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Single>>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync Method (IQueryable<Single>^)

Asynchronously computes the sum of a sequence of Single values.

Syntax

public:
[ExtensionAttribute]
static Task<float>^ SumAsync(
	IQueryable<float>^ source
)

Parameters

source: Type: System.Linq::IQueryable<Single>^
A sequence of Single values to calculate the sum of.

Return Value

Type: System.Threading.Tasks::Task<Single>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync Method (IQueryable<Single>^, CancellationToken)

Asynchronously computes the sum of a sequence of Single values.

Syntax

public:
[ExtensionAttribute]
static Task<float>^ SumAsync(
	IQueryable<float>^ source,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<Single>^
A sequence of Single values to calculate the sum of.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Single>^

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

Exception	Condition
ArgumentNullException	source is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

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QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Decimal>^>^)

Asynchronously computes the sum of the sequence of Decimal values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[ExtensionAttribute]
static Task<Decimal>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, Decimal>^>^ selector
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Decimal>^>^
A projection function to apply to each element.

Return Value

Type: System.Threading.Tasks::Task<Decimal>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

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QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Decimal>^>^, CancellationToken)

Asynchronously computes the sum of the sequence of Decimal values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[SuppressMessageAttribute("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")]
[ExtensionAttribute]
static Task<Decimal>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, Decimal>^>^ selector,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Decimal>^>^
A projection function to apply to each element.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Decimal>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Double>^>^)

Asynchronously computes the sum of the sequence of Double values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[ExtensionAttribute]
static Task<double>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, double>^>^ selector
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Double>^>^
A projection function to apply to each element.

Return Value

Type: System.Threading.Tasks::Task<Double>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Double>^>^, CancellationToken)

Asynchronously computes the sum of the sequence of Double values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<double>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, double>^>^ selector,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Double>^>^
A projection function to apply to each element.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Double>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Int32>^>^)

Asynchronously computes the sum of the sequence of Int32 values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<int>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, int>^>^ selector
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Int32>^>^
A projection function to apply to each element.

Return Value

Type: System.Threading.Tasks::Task<Int32>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Int32>^>^, CancellationToken)

Asynchronously computes the sum of the sequence of Int32 values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[SuppressMessageAttribute("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[ExtensionAttribute]
static Task<int>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, int>^>^ selector,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Int32>^>^
A projection function to apply to each element.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Int32>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Int64>^>^)

Asynchronously computes the sum of the sequence of Int64 values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[ExtensionAttribute]
static Task<long long>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, long long>^>^ selector
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Int64>^>^
A projection function to apply to each element.

Return Value

Type: System.Threading.Tasks::Task<Int64>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Int64>^>^, CancellationToken)

Asynchronously computes the sum of the sequence of Int64 values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")]
static Task<long long>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, long long>^>^ selector,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Int64>^>^
A projection function to apply to each element.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Int64>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Nullable<Decimal>>^>^)

Asynchronously computes the sum of the sequence of nullable Decimal values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<Nullable<Decimal>>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, Nullable<Decimal>>^>^ selector
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Nullable<Decimal>>^>^
A projection function to apply to each element.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Decimal>>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Nullable<Decimal>>^>^, CancellationToken)

Asynchronously computes the sum of the sequence of nullable Decimal values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[SuppressMessageAttribute("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")]
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<Nullable<Decimal>>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, Nullable<Decimal>>^>^ selector,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Nullable<Decimal>>^>^
A projection function to apply to each element.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Decimal>>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Nullable<Double>>^>^)

Asynchronously computes the sum of the sequence of nullable Double values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[ExtensionAttribute]
static Task<Nullable<double>>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, Nullable<double>>^>^ selector
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Nullable<Double>>^>^
A projection function to apply to each element.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Double>>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Nullable<Double>>^>^, CancellationToken)

Asynchronously computes the sum of the sequence of nullable Double values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[SuppressMessageAttribute("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[ExtensionAttribute]
static Task<Nullable<double>>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, Nullable<double>>^>^ selector,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Nullable<Double>>^>^
A projection function to apply to each element.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Double>>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Nullable<Int32>>^>^)

Asynchronously computes the sum of the sequence of nullable Int32 values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<Nullable<int>>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, Nullable<int>>^>^ selector
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Nullable<Int32>>^>^
A projection function to apply to each element.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Int32>>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Nullable<Int32>>^>^, CancellationToken)

Asynchronously computes the sum of the sequence of nullable Int32 values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[SuppressMessageAttribute("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")]
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<Nullable<int>>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, Nullable<int>>^>^ selector,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Nullable<Int32>>^>^
A projection function to apply to each element.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Int32>>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Nullable<Int64>>^>^)

Asynchronously computes the sum of the sequence of nullable Int64 values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<Nullable<long long>>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, Nullable<long long>>^>^ selector
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Nullable<Int64>>^>^
A projection function to apply to each element.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Int64>>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Nullable<Int64>>^>^, CancellationToken)

Asynchronously computes the sum of the sequence of nullable Int64 values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[SuppressMessageAttribute("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")]
[ExtensionAttribute]
static Task<Nullable<long long>>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, Nullable<long long>>^>^ selector,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Nullable<Int64>>^>^
A projection function to apply to each element.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Int64>>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .
OverflowException	The number of elements in source is larger than MaxValue .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Nullable<Single>>^>^)

Asynchronously computes the sum of the sequence of nullable Single values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[ExtensionAttribute]
static Task<Nullable<float>>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, Nullable<float>>^>^ selector
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Nullable<Single>>^>^
A projection function to apply to each element.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Single>>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Nullable<Single>>^>^, CancellationToken)

Asynchronously computes the sum of the sequence of nullable Single values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[SuppressMessageAttribute("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[ExtensionAttribute]
static Task<Nullable<float>>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, Nullable<float>>^>^ selector,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Nullable<Single>>^>^
A projection function to apply to each element.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Nullable<Single>>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Single>^>^)

Asynchronously computes the sum of the sequence of Single values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
static Task<float>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, float>^>^ selector
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Single>^>^
A projection function to apply to each element.

Return Value

Type: System.Threading.Tasks::Task<Single>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

QueryableExtensions::SumAsync<TSource> Method (IQueryable<TSource>^, Expression<Func<TSource, Single>^>^, CancellationToken)

Asynchronously computes the sum of the sequence of Single values that is obtained by invoking a projection function on each element of the input sequence.

Syntax

public:
generic<typename TSource>
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[ExtensionAttribute]
[SuppressMessageAttribute("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")]
static Task<float>^ SumAsync(
	IQueryable<TSource>^ source,
	Expression<Func<TSource, float>^>^ selector,
	CancellationToken cancellationToken
)

Parameters

source: Type: System.Linq::IQueryable<TSource>^
A sequence of values of type TSource .

selector: Type: System.Linq.Expressions::Expression<Func<TSource, Single>^>^
A projection function to apply to each element.

cancellationToken: Type: System.Threading::CancellationToken
A CancellationToken to observe while waiting for the task to complete.

Return Value

Type: System.Threading.Tasks::Task<Single>^

A task that represents the asynchronous operation. The task result contains the sum of the projected values.

Type Parameters

TSource: The type of the elements of source .

Exceptions

Exception	Condition
ArgumentNullException	source or selector is null .
InvalidOperationException	source does not implement IDbAsyncQueryProvider .

Remarks

Multiple active operations on the same context instance are not supported. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context.

Return to top

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