private void BtnDeleteInstallatie_Click(object sender, RoutedEventArgs e)
 {
     try
     {
         string query = "DELETE FROM tblinstallatie WHERE InstallatieID = ";
         query += ListInstallaties.SelectedValue.ToString().Substring(0, 4);
         Data d = new Data(myConnectionString);
         d.DataRemove(query);
         UpdateLists();
     }
     catch
     {
     }
 }
        private void BtnDeleteData_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                string query = "DELETE FROM ";
                string ID    = ListData.SelectedValue.ToString().Substring(0, 4);
                switch (selectedAdd)
                {
                case "Container":
                    query += "tblcontainer " +
                             "WHERE ContainerID = " + ID;
                    break;

                case "Device":
                    query += "tbldevice " +
                             "WHERE DeviceID = " + ID;
                    break;

                case "Event":
                    query += "tblevents " +
                             "WHERE EventID = " + ID;
                    break;

                case "Persoon":
                    query += "tblpersoon " +
                             "WHERE PersoonID = " + ID;
                    break;
                }

                Data d = new Data(myConnectionString);
                d.DataRemove(query);
                updateRightList();
            }
            catch
            {
            }
        }