/// <summary>
        /// 保存信息
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void SaveTopic_Click(object sender, EventArgs e)
        {
            #region 保存信息
            string tidlist = DNTRequest.GetString("forumtopicstatus");
            //当未选择主题时,则清除所有选择
            if (tidlist == "")
            {
                XmlDocumentExtender doc = new XmlDocumentExtender();
                doc.Load(configPath);
                doc.RemoveNodeAndChildNode("/Aggregationinfo/Aggregationdata/Websiteaggregationdata/Topiclist");
                doc.RemoveNodeAndChildNode("/Aggregationinfo/Aggregationpage/Website/Forum/Topiclist");
                doc.Save(configPath);
                Response.Redirect("aggregation_editforumaggset.aspx");
                return;
            }
            else
            {
                //得到所选择帖子信息
                DataTable dt = DatabaseProvider.GetInstance().GetTopicListByTidlist(tablelist.SelectedValue, tidlist);

                XmlDocumentExtender doc = new XmlDocumentExtender();
                doc.Load(configPath);
                //清除以前选择
                XmlNode topiclistnode        = doc.InitializeNode("/Aggregationinfo/Aggregationdata/Websiteaggregationdata/Topiclist");
                XmlNode websitetopiclistnode = doc.InitializeNode("/Aggregationinfo/Aggregationpage/Website/Forum/Topiclist");

                tidlist = DNTRequest.GetString("tid");
                foreach (DataRow dr in dt.Rows)
                {
                    //创建Topic节点
                    XmlElement topic = doc.CreateElement("Topic");
                    doc.AppendChildElementByDataRow(ref topic, dt.Columns, dr, "tid,message");
                    doc.AppendChildElementByNameValue(ref topic, "topicid", dr["tid"].ToString());
                    string tempubbstr = UBB.ClearUBB(dr["message"].ToString());
                    if (tempubbstr.Length > 200)
                    {
                        tempubbstr = tempubbstr.Substring(0, 200) + "...";
                    }

                    doc.AppendChildElementByNameValue(ref topic, "shortdescription", tempubbstr, true);
                    doc.AppendChildElementByNameValue(ref topic, "fulldescription", UBB.ClearUBB(dr["message"].ToString()), true);
                    topiclistnode.AppendChild(topic);


                    if (("," + tidlist + ",").IndexOf("," + dr["tid"].ToString() + ",") >= 0)
                    {
                        websitetopiclistnode.AppendChild(topic.Clone());
                    }
                }
                doc.Save(configPath);
                AggregationFacade.BaseAggregation.ClearAllDataBind();
                Response.Redirect("aggregation_editforumaggset.aspx");
            }
            #endregion
        }