private void radButton_ver_Click(object sender, EventArgs e)
 {
     try
     {
         if (radGridView_comprobantes.Rows.Count > 0)
         {
             if (radGridView_comprobantes.CurrentCell != null)
             {
                 if (radGridView_comprobantes.CurrentCell.RowIndex != -1)
                 {
                     RadFormComprobante radForm = new RadFormComprobante
                     {
                         Sesion      = Sesion,
                         comprobante = CControl.cComprobante.Sp_listar_comprobantexidcomprobante(
                             int.Parse(radGridView_comprobantes.Rows[radGridView_comprobantes.CurrentCell.RowIndex].Cells["idcomprobante"].Value.ToString())
                             ),
                         lista_detallecomprobante = CControl.cComprobante.Sp_listar_detallecomprobantexidcomprobante(
                             int.Parse(radGridView_comprobantes.Rows[radGridView_comprobantes.CurrentCell.RowIndex].Cells["idcomprobante"].Value.ToString())
                             ),
                         radform_listadecomprobantes = this
                     };
                     radForm.ShowDialog();
                 }
             }
         }
     }
     catch (Exception ex)
     {
         RadMessageBox.Show(ex.Message.ToString());
     }
 }