.net - Radio option GroupName problem in Dynamic loading user Control ASP.net -

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i have user control 

<table style="border-width: 0">     <tr>         <td style="vertical-align: middle;">             <asp:radiobutton id="rdoption" runat="server" text="i m testing"                   groupname="questions" oncheckedchanged="rdoption_checkedchanged"                  autopostback="true"/>         </td>         <td style="vertical-align: middle; padding-left: 10px">             <asp:textbox id="txtothers" runat="server" cssclass="txtbox" visible="false"></asp:textbox>         </td>     </tr> </table>  protected void page_load(object sender, eventargs e)     {         rdoption.groupname = "mygroup";         rdoption.text = option.optiondesc;     }

on survery.aspx loaded user control dynamically 

 foreach (clsoptions option in _currentquestion.options)         {             usercontrols_optionfield ctrl = page.loadcontrol("~/usercontrols/optionfield.ascx") usercontrols_optionfield;             ctrl.option = option;             pnloption.controls.add(ctrl);         }

problem each option have diffrent group name shown below. thats why options not working , option can selected while in mcqs 1 option can selected.

<input id="contentplaceholder1_ctl01_rdoption" type="radio" name="ctl00$contentplaceholder1$ctl01$mygroup" value="rdoption">  <input id="contentplaceholder1_ctl02_rdoption" type="radio" name="ctl00$contentplaceholder1$ctl02$mygroup" value="rdoption">

enter image description here

i think bug in asp.net since 1.0(awesome, have forgotten ^^).

you try following solution works repeater(or databound control) should work dynamic usercontrols.

the problem asp.net renders different unique names different namingcontainers , therefore radiobuttons different groupnames.

http://weblogs.asp.net/joseguay/archive/2008/07/24/having-radiobuttons-on-a-repeater-or-datalist.aspx

put in head section of page's:

function setuniqueradiobutton(nameregex, current) {       re = new regexp(nameregex);       for(i = 0; < document.forms[0].elements.length; i++)       {             elm = document.forms[0].elements[i]             if (elm.type == 'radio')             {                   if (re.test(elm.name))                   {                           elm.checked = false;                   }              }       }       current.checked = true; }

add clientside onclick event radiobuttons appropriate parameters:

string script = "setuniqueradiobutton('rdoption.*mygroup',this)"; rdoption.attributes.add("onclick", script);

[not tested]


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