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WinForms: Windows Authentication

Hello, I'm creating a few winform applications that will integrate with my company's webform intranet. The webforms use Windows authentication, so employees only have to use their IIS login. I wish to do the same for the winforms but I haven't been able to find anything on the internet explaining how to do this. Yes, it is a little redundant since the user is already logged into the machine, but I just want to verify that it is that user running the application. So is there any way to use windows authentication in a winform?
Thanks,
Christion

aplogic

ASKER

Or is there (after asking for their username and password) a windows authentication function that takes the username and password and returns a boolean if the user authenticates?

EBatista

try using the WindowsIdentity class

Dim theIdentity As WindowsIdentity = WindowsIdentity.GetCurrent()
Dim thePrincipal As New WindowsPrincipal(theIdentity)

If thePrincipal.Identity.IsAuthenticated Then
<tasks>
End if

you have to import the namespace Principal:
Imports System.Security.Principal

aplogic

ASKER

Hmm... that checks to see if the person is logged into the computer (and you can also then check roles, etc).
But I want to verify that the person opening my program is the same person logged into the computer. So I want to ask them their windows username and password again (basically like windows authentication for web forms).

EBatista

then u can pull the user name from WindowsPrincipal and compare with the user input:

If thePrincipal.Identity.Name=TextBox1.Tex Then
<tasks>
End if

aplogic

ASKER

What about the password- how do I verify that they put in their correct Windows password?

ASKER CERTIFIED SOLUTION

EBatista

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aplogic

ASKER

That was exactly what I was looking for.
Thanks!
Christion