private void EditEmploee_Click(object sender, RoutedEventArgs e)
 {
     using (var DB = new SkladModel())
     {
         MessageBox.Show(DB.EditEmployee(Convert.ToInt32(DGR_Employee.SelectedValue), TB_FirstNameE.Text, TB_LastNameE.Text, TB_MidleNameE.Text));
     }
     UpdateTable();
     UpdateComboBox();
 }