public void PageBind()
 {
     _newsType = NewsInfoCRUD.GetNewsType();
     this.DropNewsList.Items.Clear();
     foreach (var item in _newsType)
     {
         this.DropNewsList.Items.Add(item.typeName);
         this.DropNewsList.DataValueField = item.typeId.ToString();
         this.DropNewsList.DataTextField  = item.typeName;
         this.DropNewsList.SelectedIndex  = 0;
         this.DropNewsList.DataBind();
     }
     if (Request["newsId"] != null)
     {
         int newsId = int.Parse(Request["newsId"]);
         _news           = NewsInfoCRUD.GetNewsSingleInfo(newsId);
         TxtTitle.Text   = null;
         TxtTime.Text    = null;
         TxtContent.Text = null;
         foreach (var item in _news)
         {
             TxtTitle.Text   = item.newsTitle;
             TxtTime.Text    = item.newsTime.ToString();
             TxtContent.Text = item.newsContent;
         }
     }
 }