title: Check if user is a member of a group (ldap)
body: <p>I want to check if a user is a member of a group in c#. The application is running on windows mobile 6.1 and I have to use the ldap functions with <code>[DllImport]</code>.</p>
  
  <p>Anybody has a sample for this?
  Connection to the ldap server and check user/password works.</p>