Impersonating by username and password

User Impersonation in WindowsForms and WPF

DamirDobric — Fri, 19 Mar 2010 10:05:06 GMT

Following example shows how to enforce interactive user in Windows Forms or WPF applications to become

Damir Dobric Posts — Fri, 19 Mar 2010 09:48:57 GMT

Following example shows how to enforce interactive user in Windows Forms or WPF applications to become

dominick — Mon, 22 Oct 2007 14:09:02 GMT

You are missing crucial cleanup code

a) you have to call Win32 CloseHandle on the handle returned by LogonUser

b) you don't have to duplicate the token - this is done by the WindowsIdentity ctor

c) put the WindowsIdentity in a using statement to enforce prompt handle cleanup

d) put the WindowsImpersonationContext into a using statement to ensure that impersonation gets undone.

dominick