ParallelEnumerable.TakeWhile(Of TSource) Method (ParallelQuery(Of TSource), Func(Of TSource, Boolean))
.NET Framework (current version)
Returns elements from a parallel sequence as long as a specified condition is true.
Assembly: System.Core (in System.Core.dll)
<ExtensionAttribute> Public Shared Function TakeWhile(Of TSource) ( source As ParallelQuery(Of TSource), predicate As Func(Of TSource, Boolean) ) As ParallelQuery(Of TSource)
Parameters
- source
-
Type:
System.Linq.ParallelQuery(Of TSource)
The sequence to return elements from.
- predicate
-
Type:
System.Func(Of TSource, Boolean)
A function to test each element for a condition.
Return Value
Type: System.Linq.ParallelQuery(Of TSource)A sequence that contains the elements from the input sequence that occur before the element at which the test no longer passes.
Type Parameters
- TSource
The type of elements of source.
| Exception | Condition |
|---|---|
| ArgumentNullException | source or predicate is a null reference (Nothing in Visual Basic). |
| OperationCanceledException | The query was canceled with the token passed in through WithCancellation. |
| AggregateException | One or more exceptions occurred during the evaluation of the query. |
Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
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