private void stockgroup_Create_Click(object sender, RoutedEventArgs e)
        {
            Main.Content = "";
            AddStockGroup addStockGroupWindown = new AddStockGroup();

            addStockGroupWindown.ShowDialog();
        }
        private void Button_Click_Update(object sender, RoutedEventArgs e)
        {
            AddStockGroup addStockGroupWindow = new AddStockGroup();

            if (datagrid.SelectedIndex >= 0)
            {
                stock_group_master stckgroup = datagrid.SelectedItem as stock_group_master;
                addStockGroupWindow.StockGroupName.Text  = stckgroup.name;
                addStockGroupWindow.StockGroupId.Text    = stckgroup.id.ToString();
                addStockGroupWindow.btnModify.Visibility = Visibility.Visible;
                addStockGroupWindow.btnSave.Visibility   = Visibility.Hidden;
                addStockGroupWindow.ShowDialog();
            }
            else
            {
                MessageBox.Show("Something went wroung!");
            }
        }