//下载
 protected void DownLoad_Click(object sender, EventArgs e)
 {
     try
     {
         int AnnouncementID = Convert.ToInt32(Request.QueryString["id"].ToString());
         Common.Entities.Announcement Announce = BLLAnnounce.Find(AnnouncementID);
         int attachId = BLLAnnounce.FindAttachmentID(AnnouncementID);
         if (attachId != 0)
         {
             string srcPath = BLLAttachment.FindPath(attachId);
             if (srcPath != "")
             {
                 publicMethod.DownloadFile(srcPath);
             }
             else
             {
                 Alert.ShowInTop("无附件可下载!");
             }
         }
         else
         {
             Alert.ShowInTop("无附件可下载!");
         }
     }
     catch (Exception ex)
     {
         BLCommon.PublicMethod pm = new BLCommon.PublicMethod();
         pm.SaveError(ex, this.Request);
         PageContext.RegisterStartupScript(ActiveWindow.GetConfirmHidePostBackReference() + Alert.GetShowInTopReference("附件下载失败,请与管理员联系!"));
         //Alert.ShowInTop("附件下载失败!");
     }
 }
        //初始化
        public void InitData()
        {
            int AnnouncementID = Convert.ToInt32(Request.QueryString["id"].ToString());

            Common.Entities.Announcement Announce = BLLAnnounce.Find(AnnouncementID);
            HeadLine.Text = Announce.HeadLine;
            switch (Announce.AnnouncementSortName)
            {
                //case 1:
                //    AnnouncementSortName.Text = "通知";
                //    break;
                //case 2:
                //    AnnouncementSortName.Text = "学校公告";
                //    break;
                //case 3:
                //    AnnouncementSortName.Text = "外来公告";
                //    break;
            }

            if (Announce.Time != null)
            {
                DateTime date = Announce.Time.Value;
                Time.Text = date.Year + "-" + date.Month + "-" + date.Day;
            }
        }