private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
 {
     instance = null;
 }
 /// <summary>
 /// 按钮点击事件-查看模具详细信息
 /// </summary>
 /// <param name="sender">事件源</param>
 /// <param name="e">事件参数</param>
 private void DetailBtn_Click(object sender, RoutedEventArgs e)
 {
     if (MoldBaseInfoDG.SelectedItem != null)
     {
         MoldBaseInfo moldBaseInfo = MoldBaseInfoDG.SelectedItem as MoldBaseInfo;
         ToolInfo toolInfo = new ToolInfo(moldBaseInfo.MoldNR);
         toolInfo.ShowDialog();
     }
 }
 private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
 {
     instance = null;
 }