Need to Show my application before windows Logon

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C#

I have an authentication form having username and password fields connecting with SQL Server. I need to run this before the Windows Logon Screen. The Windows Logon screen may appear only if the username and password is correct.

or

First Winodows gets logged on. When running my application, I need to Exit From the Logon Screen.Then it may appear after the authentication is secure.



This is my requirement. Kindly give appropriate suggestions. I hope so.


Hope the reply or Send the suggestions or example codes
Or mail to me "email removed"

Thank You.