# Queryable.Sum Method

.NET Framework (current version)

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Computes the sum of a sequence of numeric values.

Namespace:   System.Linq
Assembly:  System.Core (in System.Core.dll)

NameDescription
Sum(IQueryable<Decimal>)

Computes the sum of a sequence of Decimal values.

Sum(IQueryable<Double>)

Computes the sum of a sequence of Double values.

Sum(IQueryable<Int32>)

Computes the sum of a sequence of Int32 values.

Sum(IQueryable<Int64>)

Computes the sum of a sequence of Int64 values.

Sum(IQueryable<Nullable<Decimal>>)

Computes the sum of a sequence of nullable Decimal values.

Sum(IQueryable<Nullable<Double>>)

Computes the sum of a sequence of nullable Double values.

Sum(IQueryable<Nullable<Int32>>)

Computes the sum of a sequence of nullable Int32 values.

Sum(IQueryable<Nullable<Int64>>)

Computes the sum of a sequence of nullable Int64 values.

Sum(IQueryable<Nullable<Single>>)

Computes the sum of a sequence of nullable Single values.

Sum(IQueryable<Single>)

Computes the sum of a sequence of Single values.

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Decimal>>)

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

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Double>>)

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

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int32>>)

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

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int64>>)

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

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Decimal>>>)

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.

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Double>>>)

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.

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Int32>>>)

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.

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Int64>>>)

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.

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Single>>>)

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.

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Single>>)

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