Home/ Questions/Q 7189463
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-28T19:18:28+00:00

I have a .NET application (mix of C# and VB.NET) where I would like

  • 0

I have a .NET application (mix of C# and VB.NET) where I would like to display a Windows Login Dialog box (or my own dialog box) and authenticate the user using Windows Authentication. Per requirement, I need to ask the user to authenticate after AT LEAST a minute of being idle. I would prefer a .NET native way of doing Windows Authentication but interested in other ways…

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    to authenticate a user, you can use the ValidateCredential method of the PrincipalContext. Make sure to add reference System.DirectoryServices.AccountManagement.

    //If you are validating on a domain
PrincipalContext pcon = new PrincipalContext(ContextType.Domain);    
if(pcon.ValidateCredential(txtUsername.Text, 
                           txtPassword.Text, 
                           ContextOptions.Negotiate))
{
    //User is authenticated
}

    If you’re not validating against a domain, check other ContextType. You can also use other option to validate the credentials (the ContextOptions).

    • 0