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ParallelEnumerable.Average Method (ParallelQuery(Of Nullable(Of Int32)))

Computes in parallel the average of a sequence of values.

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

<ExtensionAttribute> _
Public Shared Function Average ( _
	source As ParallelQuery(Of Nullable(Of Integer)) _
) As Nullable(Of Double)


Type: System.Linq.ParallelQuery(Of Nullable(Of Int32))

A sequence of values that are used to calculate an average.

Return Value

Type: System.Nullable(Of Double)
The average of the sequence of values.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type ParallelQuery(Of Nullable(Of Int32)). 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).


The query was canceled with the token passed in through WithCancellation.


source is a null reference (Nothing in Visual Basic).


The sum or count of the elements in the sequence is larger than MaxValue. -or- One or more exceptions occurred during the evaluation of the query.


source contains no elements.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1
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