retrieving data from active diractory

string[] properties = new string[] { "fullname" };
            try
            {

                dataGridView1.ColumnCount = 3;
                dataGridView1.Columns[0].Name = "Name";
                dataGridView1.Columns[1].Name = "Department";
                dataGridView1.Columns[2].Name = "Email";
                                               
                    DirectoryEntry entry = new DirectoryEntry("LDAP://asdd");
                    DirectorySearcher mySearcher = new DirectorySearcher(entry);
                    mySearcher.Filter = "(&(objectCategory=person)(objectClass=user))";
                    string[] propertiesToLoad = new string[1] { "samaccountname" };
                    string[] propertiesToLoad1 = new string[1] { "name" };
                    using (SearchResultCollection results = mySearcher.FindAll())
                    {
                        foreach (SearchResult result in results)
                        {                           
                            string name = (string)result.Properties["name"][0];
                            string email = (string)result.Properties["mail"][0];
                            dataGridView1.Rows.Add(new string[] { name,email});                           
                        }
                    }
                }
                catch
                {
                    MessageBox.Show("Problem in the server");
                }