Articolo
11/18/2011

CancellationTokenSource Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Signals to a CancellationToken that it should be canceled.

Inheritance Hierarchy

System.Object
System.Threading.CancellationTokenSource

Namespace: System.Threading
Assembly: mscorlib (in mscorlib.dll)

Syntax

'Declaration
<ComVisibleAttribute(False)> _
Public NotInheritable Class CancellationTokenSource _
    Implements IDisposable

[ComVisibleAttribute(false)]
public sealed class CancellationTokenSource : IDisposable

The CancellationTokenSource type exposes the following members.

Constructors

	Name	Description
	CancellationTokenSource	Initializes the CancellationTokenSource.

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Properties

	Name	Description
	IsCancellationRequested	Gets whether cancellation has been requested for this CancellationTokenSource.
	Token	Gets the CancellationToken associated with this CancellationTokenSource.

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Methods

	Name	Description
	Cancel()	Communicates a request for cancellation.
	Cancel(Boolean)	Communicates a request for cancellation.
	CreateLinkedTokenSource(array<CancellationToken[])	Creates a CancellationTokenSource that will be in the canceled state when any of the source tokens are in the canceled state.
	CreateLinkedTokenSource(CancellationToken, CancellationToken)	Creates a CancellationTokenSource that will be in the canceled state when any of the source tokens are in the canceled state.
	Dispose	Releases all resources used by the current instance of the CancellationTokenSource class.
	Equals(Object)	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Remarks

For more information and code examples see Cancellation.

Version Information

Silverlight

Supported in: 5

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

All public and protected members of CancellationTokenRegistration are thread-safe and may be used concurrently from multiple threads, with the exception of Dispose, which must only be used when all other operations on the CancellationTokenRegistration have completed.

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