Command line tool to test Active Directory authentication

AuthTest.cs

using System;
using System.DirectoryServices;

class Auth
{
	public static void Main(){

		string path= "LDAP://DC=domain,DC=local";
		string strAccountId = "[username]";
		string strPassword = "[password]";
		bool bSucceeded;
		string strError;
		
		DirectoryEntry adsEntry = new DirectoryEntry(path, strAccountId, strPassword);
		
		DirectorySearcher adsSearcher = new DirectorySearcher( adsEntry );
		adsSearcher.Filter = "(sAMAccountName=" + strAccountId + ")";

		try 
		 {
			SearchResult adsSearchResult = adsSearcher.FindOne();
			bSucceeded = true;		  
			strError = "User has been authenticated by Active Directory.";
			adsEntry.Close();
		}
		catch ( Exception ex )
		{
			bSucceeded = false;
			strError = ex.Message;
			adsEntry.Close();
		}		 
		 
		if (bSucceeded){
			Console.WriteLine("Authentication Successful");
		}else {
			Console.WriteLine("Authentication Failed");
		}
		 
	 }
 }