protected void BtnSubmit_Click(object sender, EventArgs e)
 {
     if (this.Page.IsValid)
     {
         DateTime         endDate           = DataConverter.CDate(this.DpkEndDate.Text);
         DateTime         beginDate         = DataConverter.CDate(this.DpkStartDate.Text);
         int              nodeId            = DataConverter.CLng(this.DrpCategory.SelectedValue);
         DataTable        dataTable         = ContentManage.GetCountByNodeAndMonth(nodeId, beginDate, endDate);
         StringBuilder    sb                = new StringBuilder("<table class=\"border\" id=\"statistics\" width=\"100%\" cellspacing=\"1\" cellpadding=\"2\" border=\"0\">");
         int              dateIntervalMonth = this.GetDateIntervalMonth(beginDate, endDate);
         IList <NodeInfo> nodeList          = new List <NodeInfo>();
         if (nodeId > 0)
         {
             NodeInfo item = new NodeInfo();
             item.NodeId   = nodeId;
             item.NodeName = EasyOne.Contents.Nodes.GetCacheNodeById(nodeId).NodeName;
             nodeList.Add(item);
         }
         else
         {
             nodeList = EasyOne.Contents.Nodes.GetNodesList(NodeType.Container);
         }
         this.BuildTableHead(sb, dateIntervalMonth, beginDate);
         this.BuildTableBody(sb, dateIntervalMonth, beginDate, dataTable, nodeList);
         this.BuildTableFooter(sb, dateIntervalMonth);
         sb.Append("</table>");
         this.SpanCount.InnerHtml = sb.ToString();
     }
 }