WindowsImpersonationContext.Undo Method

Definition

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

public:
 void Undo();
public void Undo ();
member this.Undo : unit -> unit
Public Sub Undo ()

Exceptions

An attempt is made to use this method for any purpose other than to revert identity to self.

Examples

The following example shows how to impersonate a Windows identity using a specified user token.

WindowsImpersonationContext^ ImpersonationCtx = WindowsIdentity::Impersonate( userToken );

//Do something under the context of the impersonated user.

ImpersonationCtx->Undo();
WindowsImpersonationContext ImpersonationCtx = WindowsIdentity.Impersonate(userToken); 
//Do something under the context of the impersonated user.
 ImpersonationCtx.Undo();

Dim ImpersonationCtx As WindowsImpersonationContext = _
   WindowsIdentity.Impersonate(userToken)
'Do something under the context of the impersonated user. 
ImpersonationCtx.Undo()

Notes to Inheritors

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

Applies to