public void ShowRightContent(RightContent content, bool foldLeft = true)
 {
     if (content == RightContent.None)
     {
         RightContentControl = null;
         ShowLeftMenu(true);
     }
     else if (content == RightContent.Editor)
     {
         RightContentControl.Content = EditorPanel;
     }
     else if (content == RightContent.Option)
     {
         OptionPanel.UpdatePanel();
         RightContentControl.Content = OptionPanel;
         OptionButtonPopup.IsOpen    = false;
         if (foldLeft)
         {
             ShowLeftMenu(false);
         }
     }
     else if (content == RightContent.PairList)
     {
         if (TransformListFiles.SelectedItem == null)
         {
             return;
         }
         // 在此处检查文件是否存在
         string path = @"pair folder\" + TransformListFiles.SelectedItem.ToString() + ".txt";
         if (!File.Exists(path))
         {
             MessageBox.Show("找不到文件:" + path);
             return;
         }
         RightContentControl.Content = PairListPanel;
         PairListPanel.LoadFile(path);
         if (foldLeft)
         {
             ShowLeftMenu(false);
         }
     }
     CurrentRightContent = content;
 }