CODEWITHSUNDEEP
c#principalcontext
Durgaprasad Budhwani
Durgaprasad Budhwani

Reputation: 977

C# - Not able to validate local machine user when ".\" is pre-append with username

I’m using System.DirectoryServices.AccountManagement library to validate a local user.

I’ve got the following code:

  private bool IsValidWindowsUser(string userName, string password)
  {
       using (var p = new PrincipalContext(ContextType.Machine))
            return p.ValidateCredentials(userName, password);
  }

But whenever I am passing correct username with ".\" preappend e.g if the user is name is "test" and if I am passing username like ".\test" then it is giving me an exception

The network path was not found.

Can somebody please help me. If I remove ".\" then it is working fine.

My another condition is I only want to validate Local machine user not domain user.

Please help

Upvotes: 1

Views: 2180

Answers (2)

Manny
Manny

Reputation: 1034

Here's what I got working, in case someone else is having similar issue.

 string GetLogin(string s)
    {
        string regex = @"^(.*\\)?([^\@]*)(@.*)?$";
        return Regex.Replace(s, regex, "$2", RegexOptions.None);
    }

using (PrincipalContext pcLocal = new PrincipalContext(ContextType.Machine))
            {
                try
                {
                            try
                            {
                                if (null != group && pcLocal.ValidateCredentials($".\\{username}", password))
                                {
                                    return GetLogin(findByIdentity.SamAccountName);
                                }
                            }
                            catch (Exception)
                            {
                                string user = GetLogin(username);

                                if (null != group && pcLocal.ValidateCredentials(user, password))
                                {
                                    return GetLogin(findByIdentity.SamAccountName);
                                }
                            }

                }
                catch (Exception e)
                {
                    throw e;
                }
            }

Upvotes: 0

alex.b
alex.b

Reputation: 4567

Try this: 

p.ValidateCredentials(Environment.MachineName + "\\" + userName, password);

Upvotes: 0

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