c# - RadListView programatically add EditItemTemplate with ListView in aspx -


i have radlistview in aspx page has grouping, , works when in standard mode. i.e. using itemtemplate. when change edititemtemplate, edititemtemplate added code behind, doesn't seem display @ all.

i have edititemtemplate dynamically sets control type based on value. however, seems appear right @ bottom of screen, below buttons outside of listview, , isn't working grouping have.

so in page_prerender have (i've tried adding listview_prerender)

this.listview.edititemtemplate = new edititemtemplate(questionlist);

my edititemtemplate looks this:

 public class edititemtemplate : itemplate     {         protected literalcontrol lcontrol;         private readonly list<questionsvm> _questionlist;         public edititemtemplate(list<questionsvm> questionlist)         {             _questionlist = questionlist;         }         public void instantiatein(control container)         {             if (count < _questionlist.count - 1)             {                  htmltablerow row = new htmltablerow();                 container.controls.add(row);                 row.attributes["class"] = "rlviedit";                  tablehelper.addlabelfor(tablehelper.addcell(row), "questiongroup");                 tablehelper.addlabelfor(tablehelper.addcell(row), "question");                  var qtype = (enums.questiontypes)enum.parse(typeof(enums.questiontypes),                     _questionlist[count].displaytype);                  switch (qtype)                 {                     case enums.questiontypes.shorttext:                     case enums.questiontypes.longtext:                         tablehelper.addtextboxfor(tablehelper.addcell(row), "answer");                         break;                     case enums.questiontypes.number:                         tablehelper.addnumerictextboxfor(tablehelper.addcell(row), "answer");                         break;                     case enums.questiontypes.boolean:                         tablehelper.addcheckboxfor(tablehelper.addcell(row), "answer");                         break;                     case enums.questiontypes.date:                         tablehelper.adddatetimefor(tablehelper.addcell(row), "answer");                         break;                     default:                         throw new argumentoutofrangeexception();                 }                    //container.controls.add(answer);                 count++;             }         }

here grouping in aspx page:

  <datagroups>             <telerik:listviewdatagroup groupfield="questiongroup" datagroupplaceholderid="datagroupplaceholder2">                 <datagrouptemplate>                     <asp:panel runat="server" id="panel3" cssclass="datagroup" groupingtext='<%# (container).datagroupkey %>'>                         <asp:panel runat="server" id="itemplaceholder1" ></asp:panel>                     </asp:panel>                 </datagrouptemplate>                 <groupaggregates>                     <telerik:listviewdatagroupaggregate aggregate="count" datafield="questiongroup" />                 </groupaggregates>              </telerik:listviewdatagroup>         </datagroups>

if have edititemtemplate 1 below, works ok doesn't have different controls. 

 <edititemtemplate>             <table>                  <tr><td><br /></td></tr>                 <tr>                     <td>                         <asp:label id="label1" runat="server" text='<%# eval("question") %>'></asp:label> &nbsp;                     </td>                     <td>                         <telerik:radeditor id="textbox1" width="500" runat="server" text='<%# bind("answer") %>'></telerik:radeditor>                      </td>                 </tr>             </table>              </edititemtemplate>

any appreciated.


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