C#.NET: Exception Handling (Opgelost)

///// <summary>
///// Check if the user is allowed to log in.
///// </summary>
///// <param name="userName">Windows Username. DataType: System.String</param>
///// <param name="Password">Windows Password. DataType: System.String</param>
///// <returns>TRUE if the credentials are authenticated, FALSE if an error occurred.</returns>
public static bool AuthenticateUser(string userName, string password)
{
	try
	{
		const string adDomain = "nlamv01rdc001.ad.eu.rf-group.org";
		const string baseDn = "DC=ad, DC=eu, DC=rf-group, DC=org";
		const string groupDn = "CN=GRP-BEVIL01-ICT-STAFF-M,OU=GROUPS,OU=EMRBE,OU=PRODUCTION";
		bool authenticated = false;
		string filter = "(&(objectclass=organizationalPerson)(&(memberOf=" + groupDn + "," + baseDn + ")(&(sAMAccountName=" + userName + "))))";

		DirectoryEntry rootEntry = new DirectoryEntry("LDAP://" + adDomain, userName, password);

		DirectorySearcher searcher = new DirectorySearcher(rootEntry);
		searcher.PropertiesToLoad.Add("cn");
		searcher.ClientTimeout = new TimeSpan(0, 1, 0);
		searcher.ServerTimeLimit = new TimeSpan(0, 0, 30);
		searcher.Filter = filter;

		SearchResultCollection results = searcher.FindAll();

		if (results.Count > 0)
		{
			authenticated = true;
		}
		return authenticated;
	}
	catch (DirectoryServicesCOMException exDirServCom)
	{
		throw new GeneralHelperClassesException(exDirServCom.Message);
	}
	catch (Exception ex)
	{
		throw new GeneralHelperClassesException(ex.Message);
	}
}

///// <summary>
///// Check if the user is allowed to log in.
///// </summary>
///// <param name="userName">Windows Username. DataType: System.String</param>
///// <param name="Password">Windows Password. DataType: System.String</param>
///// <returns>TRUE if the credentials are authenticated, FALSE if an error occurred.</returns>
public static bool AuthenticateUser(string userName, string password)
{
	try
	{
		const string adDomain = "nlamv01rdc001.ad.eu.rf-group.org";
		const string baseDn = "DC=ad, DC=eu, DC=rf-group, DC=org";
		const string groupDn = "CN=GRP-BEVIL01-ICT-STAFF-M,OU=GROUPS,OU=EMRBE,OU=PRODUCTION";
		bool authenticated = false;
		string filter = "(&(objectclass=organizationalPerson)(&(memberOf=" + groupDn + "," + baseDn + ")(&(sAMAccountName=" + userName + "))))";
 
		DirectoryEntry rootEntry = new DirectoryEntry("LDAP://" + adDomain, userName, password);
 
		DirectorySearcher searcher = new DirectorySearcher(rootEntry);
		searcher.PropertiesToLoad.Add("cn");
		searcher.ClientTimeout = new TimeSpan(0, 1, 0);
		searcher.ServerTimeLimit = new TimeSpan(0, 0, 30);
		searcher.Filter = filter;
 
		SearchResultCollection results = searcher.FindAll();
 
		if (results.Count > 0)
		{
			authenticated = true;
		}
		return authenticated;
	}
	catch (DirectoryServicesCOMException exDirServCom)
	{
		throw new GeneralHelperClassesException(exDirServCom.Message);
	}
	catch (Exception ex)
	{
		throw new GeneralHelperClassesException(ex.Message);
	}
}