# Queryable.Sum Method

Silverlight

Computes the sum of a sequence of numeric values.

This member is overloaded. For complete information about this member, including syntax, usage, and examples, click a name in the overload list.

## Overload List

Name Description
Sum(IQueryable<Decimal>) Computes the sum of a sequence of Decimal values.
Sum(IQueryable<Nullable<Decimal>>) Computes the sum of a sequence of nullable Decimal values.
Sum(IQueryable<Double>) Computes the sum of a sequence of Double values.
Sum(IQueryable<Nullable<Double>>) Computes the sum of a sequence of nullable Double values.
Sum(IQueryable<Int32>) Computes the sum of a sequence of Int32 values.
Sum(IQueryable<Nullable<Int32>>) Computes the sum of a sequence of nullable Int32 values.
Sum(IQueryable<Int64>) Computes the sum of a sequence of Int64 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.
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