private void b_agregar_Click(object sender, EventArgs e)
 {
     frm_Restaurantes rest = new frm_Restaurantes();
     rest.accion = "Insertar";
     rest.Show();
 }
 private void dgv_restaurante_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
 {
     if (e.RowIndex > -1)
     {
         frm_Restaurantes rest = new frm_Restaurantes();
         rest.accion = "Editar";
         rest.codigo = dgv_restaurante.Rows[e.RowIndex].Cells[0].Value.ToString().Replace(" ", "");
         rest.ShowDialog();
     }
 }