JQuery EasyUI弹出对话框解决Asp.net服务器控件无法执行后台代码的方法

         < div  id ="dd"  title ="处理流程"  icon ="icon-save"  style ="overflow:auto;padding:10px;" >
         < table  width ="100%"  cellpadding ="0"  cellspacing ="1"  border ="0"  id ="Table1" >
             < tr >
                 < td  >
                     < asp:DataGrid  ID ="dg"  runat ="server"  Width ="100%"  CssClass ="dg"  AutoGenerateColumns ="False"
                PageSize ="20"  AllowSorting ="True"  DataKeyField ="ID"  Height ="0px"  OnItemDataBound ="dg_ItemDataBound" >
                 < EditItemStyle  CssClass ="EditItem" ></ EditItemStyle >
                 < AlternatingItemStyle  CssClass ="AlternatingItem" ></ AlternatingItemStyle >
                 < ItemStyle  CssClass ="Item" ></ ItemStyle >
                 < HeaderStyle  CssClass ="Header" ></ HeaderStyle >
                 < FooterStyle  CssClass ="Footer" ></ FooterStyle >
                 < Columns >
                     < asp:TemplateColumn  HeaderText ="ID"  Visible ="false" >
                         < ItemTemplate >
                             < asp:Label  ID ="lblId"  runat ="server"  Text ='<%#  DataBinder.Eval(Container, "DataItem.id") % > '> </ asp:Label >
                         </ ItemTemplate >
                     </ asp:TemplateColumn >
                     < asp:TemplateColumn  HeaderText ="序号" >
                         < ItemTemplate >
                             < asp:Label  ID ="lblOrderbyId"  runat ="server"  Text ='<%#  DataBinder.Eval(Container, "DataItem.OrderbyId") % > '> </ asp:Label >
                         </ ItemTemplate >
                     </ asp:TemplateColumn >
                     < asp:TemplateColumn  HeaderText ="处理类型" >
                         < ItemTemplate >
                             < asp:Label  ID ="lblproctype"  runat ="server"  Text ='<%#  DataBinder.Eval(Container, "DataItem.proctype") % > '> </ asp:Label >
                         </ ItemTemplate >
                     </ asp:TemplateColumn >
                     < asp:TemplateColumn  HeaderText ="流程名称" >
                         < ItemTemplate >
                             < asp:Label  ID ="lblflowname"  runat ="server"  Text ='<%#  DataBinder.Eval(Container, "DataItem.flowname") % > '> </ asp:Label >
                         </ ItemTemplate >
                     </ asp:TemplateColumn >
                     < asp:TemplateColumn  HeaderText ="流程处理人" >
                         < ItemTemplate >
                             < asp:Label  ID ="lblproc_user"  runat ="server"  Text ='<%#  DataBinder.Eval(Container, "DataItem.procuser") % > '> </ asp:Label >
                             < asp:DropDownList  ID ="ddlproc_user"  runat ="server"  Visible ="false"   />
                         </ ItemTemplate >
                     </ asp:TemplateColumn >
                     < asp:TemplateColumn  HeaderText ="流程步骤描述" >
                         < ItemTemplate >
                             < asp:Label  ID ="lblmayaddflow"  runat ="server"  Text ='<%#  DataBinder.Eval(Container, "DataItem.flownote") % > '> </ asp:Label >
                         </ ItemTemplate >
                     </ asp:TemplateColumn >
                 </ Columns >
             </ asp:DataGrid >
                 </ td >
             </ tr >
         </ table >
                    
         < table  class ="formitem_pagestyle"  cellspacing ="0"  cellpadding ="0"  border ="0"  style ="width: 100%;
            border-collapse: collapse;" >
             < tr >
                 < td  class ="pagebutton"  align ="right"  style ="height: 30px; width: 100%;" >
                     < asp:ImageButton  ID ="imgbtnOK"  runat ="server"  ImageUrl ="~/Themes/Default/btn_savetobox.gif"
                        OnClick ="imgbtnOK_Click"   /> &nbsp;
                     < img  src ="http://www.cnblogs.com/Themes/Default/btn_close.gif"  border ="0"  onclick ="close1()" />
                 </ td >
             </ tr >
         </ table >
         </ div >   
         < br  />< br  />
         < div  align ="center" >    
             < img  src ="http://www.cnblogs.com/Themes/Default/btn_savetobox.gif"  border ="0"  onclick ="open1()" />
             < asp:ImageButton  ID ="imgbtnBack"  runat ="server"  ImageUrl ="~/Themes/Default/btn_back.gif"
                        CausesValidation ="false"  OnClick ="imgbtnBack_Click"   />

     < script  language ="javascript" >
        $( function (){
             var  dlg  =  jQuery( " #dd " ).dialog({
                draggable:  true ,
                resizable:  true ,
                closed: true ,
                show:  ' Transfer ' ,
                hide:  ' Transfer ' ,
                autoOpen:  false ,
                width: 600 ,
                minHeight:  10 ,
                minwidth:  10
            });
            dlg.parent().appendTo(jQuery( " form:first " ));
        });

         function  open1(){
            $( ' #dd ' ).dialog( ' open ' );
        }
         function  close1(){
            $( ' #dd ' ).dialog( ' close ' );
        }
    </script> 

     $('#dialog_link').click(function () {