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ParallelEnumerable.OfType<TResult> Method

Filters the elements of a ParallelQuery based on a specified type.

Namespace:  System.Linq
Assemblies:   System.Linq.Parallel (in System.Linq.Parallel.dll)
  System.Core (in System.Core.dll)

public static ParallelQuery<TResult> OfType<TResult>(
	this ParallelQuery source

Type Parameters


The type to filter the elements of the sequence on.


Type: System.Linq.ParallelQuery

The sequence whose elements to filter.

Return Value

Type: System.Linq.ParallelQuery<TResult>
A sequence that contains elements from the input sequence of type .

Usage Note

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


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


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


One or more exceptions occurred during the evaluation of the query.

.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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