dataGridView4.BeginEdit(true);
              dataGridView4.SuspendLayout();
 
              //Daten aus dem internen Telefonbuch aktualisieren
              Access_Zugriff cstimer = new Access_Zugriff();
              cstimer.Access_Datenbank("Select * from Userdaten");
 
              OleDbDataReader drtimer = cstimer.cmd.ExecuteReader();
              //DataGridView füllen
 
              dataGridView4.Rows.Clear();
              dataGridView4.Columns[0].DefaultCellStyle.Alignment = _
                DataGridViewContentAlignment.MiddleCenter;
 
 
              while (drtimer.Read())
              {
 
                  if (drtimer[0].ToString() == "on")
                      pic = Properties.Resources.PC_ON;
                  else
                      pic = Properties.Resources.PC_OFF;
 
                  dataGridView4.Rows.Add(pic, drtimer[1].ToString() + " " + _
                    drtimer[2].ToString(), drtimer[3].ToString());
 
              }
              dataGridView4.Sort(dataGridView4.Columns[1], _
                ListSortDirection.Ascending);//DategridView neu sortieren
              dataGridView4.ClearSelection();
 
              if (positionTelbuch >= 0)
              { dataGridView4.Rows[positionTelbuch].Selected = true;}
 
              dataGridView4.FirstDisplayedScrollingRowIndex = _
                scrollpositionTelbuch;
 
 
 
              drtimer.Close();
              cstimer.con.Close();
              timer_Telbuch_aktualisieren.Interval = 10000;
              dataGridView4.EndEdit();
              dataGridView4.ResumeLayout();