WindowsImpersonationContext Class


Represents the Windows user prior to an impersonation operation.

Namespace:   System.Security.Principal
Assembly:  mscorlib (in mscorlib.dll)


type WindowsImpersonationContext = 
        interface IDisposable


Releases all resources used by the WindowsImpersonationContext.


Releases the unmanaged resources used by the WindowsImpersonationContext and optionally releases the managed resources.


Determines whether the specified object is equal to the current object.(Inherited from Object.)


Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)


Serves as the default hash function. (Inherited from Object.)


Gets the Type of the current instance.(Inherited from Object.)


Creates a shallow copy of the current Object.(Inherited from Object.)


Returns a string that represents the current object.(Inherited from Object.)


Reverts the user context to the Windows user represented by this object.

This class reverts a user's identity after the user impersonates another user.


This type implements the IDisposable interface. When you have finished using the type, you should dispose of it either directly or indirectly. To dispose of the type directly, call its Dispose method in a try/catch block. To dispose of it indirectly, use a language construct such as using (in C#) or Using (in Visual Basic). For more information, see the “Using an Object that Implements IDisposable” section in the IDisposable interface topic.

Notes to Implementers:

Because Microsoft Windows 98 and Windows Millennium Edition platforms do not have users or user tokens, impersonation cannot take place on those platforms.

The following example demonstrates how to impersonate a user and then revert to the original identity.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1

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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