C# - Active Directory Schema für eine Klasse auslesen

using System.Collections.Generic;
using System.DirectoryServices.ActiveDirectory;

namespace AdExporter {

  public class SchemaProperty {
    public string Name { get; set; }
    public string CommonName { get; set; }
    public string Description { get; set; }
  }

  public class SchemaReader {

    public static List<SchemaProperty> Read(string pDomainController, int pPortNumber,
                            string pUsername, string pPassword, string pClassName = "user") {
      List<SchemaProperty> res = new List<SchemaProperty>();
      DirectoryContext dirContext = new DirectoryContext(DirectoryContextType.DirectoryServer,
      pDomainController + ":" + pPortNumber.ToString(), pUsername, pPassword);
      ActiveDirectorySchema curSchema = ActiveDirectorySchema.GetSchema(dirContext);
      ActiveDirectorySchemaClass userSchema = curSchema.FindClass(pClassName);
      ReadOnlyActiveDirectorySchemaPropertyCollection props = userSchema.GetAllProperties();

      foreach (ActiveDirectorySchemaProperty curProp in props) {
        res.Add(new SchemaProperty() { Name = curProp.Name, CommonName = curProp.CommonName, Description = curProp.Description });
      }
      return res;
    }
  }
}