private void dataGridView1_RowValidating(object sender, DataGridViewCellCancelEventArgs e)
{
//проверяем, чтобы были заполнены какие-то поля
if ((prikazTypeBindingSource.Current != null)
&& ((prikazTypeBindingSource.Current as PrikazType).PrikazTypeName != "")
&& ((prikazTypeBindingSource.Current as PrikazType).PrikazTypeName != null)
&& (cbPrikazSuperType.SelectedItem != null))
(prikazTypeBindingSource.Current as PrikazType).PrikazSuperType =
cbPrikazSuperType.SelectedItem as PrikazSuperType;
}