how do I programmatically control windows login?

Question

5.00/5 (1 vote)

See more:

Hi everyone. As part of a project I'm doing, I need to progammtically control windows login.

I checked out the link below, which allows one to automatically login to windows given a username and password.
Windows XP Automatic Login Using C# ( C Sharp)

Now if only i could bypass the login screen (as done in the link above), and show my own authentication screen before windows loads.

In short. I need to bypass the windows login screen altogether and show my own authentication system. It could be something as simple as showing my project's windows form with a username and password textbox, along with a login button. What is the simplest way i can achieve this?

Posted 29-Mar-10 13:18pm

ashwin_nair2011

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Christian Graus · Answer 1 · 2010-03-29T13:47:00

Solution 1

I believe you need to replace the gina.dll file ( written in C++ ) to change the login form to your own.

Posted 29-Mar-10 13:47pm

Christian Graus

scott.leckie · Answer 2 · 2010-05-26T03:47:00

Regarding the question "This code is in C++, which I'm not too familiar with. Is there any other way I can do this using either VB.NET or C#?" - not really. The GINA code needs to be very lightweight and have minimal dependencies on other code, especially the CLR or even MFC.
The recommended approach for a GINA replacement is to write it in native code. See http://msdn.microsoft.com/en-us/magazine/cc163803.aspx[^] for more information.