Article
11/18/2011

ThreadAbortException Class

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

The exception that is thrown when a call is made to the Abort method. This class cannot be inherited.

Inheritance Hierarchy

System.Object
  System.Exception
    System.SystemException
      System.Threading.ThreadAbortException

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

Syntax

'Declaration
<ComVisibleAttribute(True)> _
Public NotInheritable Class ThreadAbortException _
    Inherits SystemException

[ComVisibleAttribute(true)]
public sealed class ThreadAbortException : SystemException

The ThreadAbortException type exposes the following members.

Properties

	Name	Description
	Data	Gets a collection of key/value pairs that provide additional user-defined information about the exception. (Inherited from Exception.)
	HResult	Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception. (Inherited from Exception.)
	InnerException	Gets the Exception instance that caused the current exception. (Inherited from Exception.)
	Message	Gets a message that describes the current exception. (Inherited from Exception.)
	StackTrace	Gets a string representation of the frames on the call stack at the time the current exception was thrown. (Inherited from Exception.)

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Methods

	Name	Description
	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.)
	GetBaseException	When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions. (Inherited from Exception.)
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetType	Gets the runtime type of the current instance. (Inherited from Exception.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToString	Creates and returns a string representation of the current exception. (Inherited from Exception.)

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Remarks

When a call is made to the Abort method to destroy a thread, the common language runtime (CLR) throws a ThreadAbortException. ThreadAbortException is a special exception that can be caught, but it will automatically be raised again at the end of the catch block. When this exception is raised, the runtime executes all the finally blocks before ending the thread.

In Silverlight-based applications, you cannot abort threads. If a thread in your application receives a ThreadAbortException, it is because the CLR has aborted the thread.

Note:
The value of the inherited Data property is always nulla null reference (Nothing in Visual Basic).

When the CLR stops background threads, after all foreground threads in a managed executable have ended, it does not use Thread.Abort. Therefore, you cannot use ThreadAbortException to detect when background threads are being terminated by the CLR.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

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

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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