c# - Unlock Windows programmatically

Question

In my current C# code I'm able to lock a Windows user session programmatically (same as Windows + L).

Since the app would still be running, is there any way to unlock the session from that C# program. User credentials are known. The app is running on Windows 7.

Answer 1

Here is some hackery to do that: http://www.codeproject.com/Articles/16197/Remotely-Unlock-a-Windows-Workstation Didn't test it myself though.

Not for .NET part, but you could also make your own custom Logon UI and inject some mechanism there. It can easily become security problem though.