WindowsImpersonationContext.Undo Method ()
Reverts the user context to the Windows user represented by this object.
Assembly: mscorlib (in mscorlib.dll)
An attempt is made to use this method for any purpose other than to revert identity to self.
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.
Available since 1.1