c# - To bind Usercontrol in aspx using ajax -

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in below code have usercontrol control.ascx have textbox , dropdown , want check db whether field textbox or dropdown , want display in sample.aspx using ajax. pls me this.

control.ascx

<table width="100%"> <tr>       <td>          <input type="text"  id="btnfield" value="val" />       </td>       <td>          <select id="cbb" style="width:75%"></select>       </td> </tr> </table>

sample.aspx 

  <table>        <tr>            <td>                <uc1:ucreport id="ucreport" runat="server" />            </td>        </tr>             </table>               function loadusercontrol() {              $.ajax({                 type: "post",                 url: "sample.aspx/loadcontrols",                 data: "",                 contenttype: "application/json; charset=utf-8",                 datatype: "json",                 success: function (r) {                      var data = $.parsejson(r.d);                     alert(r.d);                   }             });                 }           //will return textbox or dropdown          [system.web.services.webmethod]          public static string loadcontrols()          {               string test= "2";                client controls = new client();               dataset dsfield = controls.getfielddata(int32.parse(test));               string sreturn = jsonconvert.serializeobject(dsfield.tables[0]).tostring();               return sreturn;               }


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