Error codes for bindasync seem to all be the same

[sej69]

I started writing a method to test authentication and testing (and writing catches) for scenarios that may occur. I then noticed that every error message that pops up seems to be the same hResult but there is a different message. So there doesn't appear to be a way to differentiate between error codes for handling.

Sample code:

public static async Task TestAuthAsync(string szServer, string szAdminName, string szPassword)
{
using (var cn = new LdapConnection())
{
try
{
cn.Timeout = new TimeSpan(0, 0, 30);
cn.Connect("10.1.1.11", 389); // having problems with 636; still working on that...
await cn.BindAsync(LdapAuthMechanism.SIMPLE, szAdminName, szPassword);
}
catch (Exception ex)
{
if (Environment.UserInteractive)
Console.WriteLine(ex.Message);
if (ex.HResult == 2146233088) // <---- same hresult
return AuthReturn.ServerDown;
else if (ex.HResult == 2146233088) // <---- same hresult
return AuthReturn.InvalidCredentials;
}
return AuthReturn.Success;
}
}