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Enumerable.Sum Method (IEnumerable(Of Single))

Computes the sum of a sequence of Single values.

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

'Declaration
<ExtensionAttribute> _
Public Shared Function Sum ( _
	source As IEnumerable(Of Single) _
) As Single

Parameters

source
Type: System.Collections.Generic.IEnumerable(Of Single)

A sequence of Single values to calculate the sum of.

Return Value

Type: System.Single
The sum of the values in the sequence.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable(Of Single). When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

ExceptionCondition
ArgumentNullException

source is Nothing.

This method returns zero if source contains no elements.

In Visual Basic query expression syntax, an Aggregate Into Sum() clause translates to an invocation of Sum.

The following code example demonstrates how to use Sum(IEnumerable(Of Single)) to sum the values of a sequence.

        ' Create a list of Single values. 
        Dim numbers As New List(Of Single)(New Single() _
                                           {43.68F, 1.25F, 583.7F, 6.5F})

        ' Get the sum of values in the list. 
        Dim sum As Single = numbers.Sum()

        ' Display the output.
        MsgBox("The sum of the numbers is " & sum)

        ' This code produces the following output: 
        
        ' The sum of the numbers is 635.13

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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