How to update Inner controls value in list in windows phone 7? -

i working in windows phone application have 1 listbox control. , 1 button inner control.

so in list 20 buttons after binding data. want change data of button once clicked.

this sample code. first app windows phone.

 <listbox grid.row="1" horizontalalignment="left" margin="10,10,0,0" name="lstinstagramtags" verticalalignment="top" width="444" height="562" selectionchanged="lstinstagramtags_selectionchanged">             <listbox.itemtemplate>                 <datatemplate>                     <stackpanel orientation="horizontal" height="100" margin="-10,-10,-10,-10">                          <button click="button_click" content="needtochangethisvalue" width="150" fontsize="13" height="60" margin="-560,35,5,5" />                     </stackpanel>                 </datatemplate>             </listbox.itemtemplate>         </listbox>      private void button_click(object sender, routedeventargs e)             {     httpwebrequest myrequest = (httpwebrequest)httpwebrequest.create(myuri);                     myrequest.method = "post";                     myrequest.contenttype = "application/x-www-form-urlencoded";                     myrequest.begingetrequeststream(new asynccallback(getrequeststreamcallback), myrequest);     }  void getrequeststreamcallback(iasyncresult callbackresult)         {             httpwebrequest myrequest = (httpwebrequest)callbackresult.asyncstate;             // end stream request operation             stream poststream = myrequest.endgetrequeststream(callbackresult);              string postdata = "action=follow&access_token=966258514.201df4f.4b1c5015a7784a63aac00b9a902c4176";              // create post data             string postdata = postdata;             byte[] bytearray = encoding.utf8.getbytes(postdata);              // add post data web request             poststream.write(bytearray, 0, bytearray.length);             poststream.close();              // start web request             myrequest.begingetresponse(new asynccallback(getresponsetstreamcallback), myrequest);         }  void getresponsetstreamcallback(iasyncresult callbackresult)         {             httpwebrequest request = (httpwebrequest)callbackresult.asyncstate;             httpwebresponse response = (httpwebresponse)request.endgetresponse(callbackresult);             using (streamreader httpwebstreamreader = new streamreader(response.getresponsestream()))             {                 **string result** = httpwebstreamreader.readtoend();              }         } 

i want change button data based on result (marked bold). not getting way update control on basis of result.

please suggest me way this.

thanks

i think question option based, here 3 ideas

• globul button

define button in current page

private button helerbutton;     private void button_click(object sender, routedeventargs e)         {             helerbutton = (button)sender;             httpwebrequest myrequest = (httpwebrequest)httpwebrequest.create(myuri);             myrequest.method = "post";             myrequest.contenttype = "application/x-www-form-urlencoded";             myrequest.begingetrequeststream(new asynccallback(getrequeststreamcallback), myrequest);         }  void getresponsetstreamcallback(iasyncresult callbackresult)         {             httpwebrequest request = (httpwebrequest)callbackresult.asyncstate;             httpwebresponse response = (httpwebresponse)request.endgetresponse(callbackresult);             using (streamreader httpwebstreamreader = new streamreader(response.getresponsestream()))             {                string result = httpwebstreamreader.readtoend();                helerbutton.content = result              }         } 

• second approach

you can change code architecture little bit

    private void button_click(object sender, routedeventargs e)     {         httpwebrequest myrequest = (httpwebrequest)httpwebrequest.create(myuri);         myrequest.method = "post";         myrequest.contenttype = "application/x-www-form-urlencoded";         myrequest.begingetrequeststream(r =>          {             var httprequest = (httpwebrequest)r.asyncstate;             var httpresponse = (httpwebresponse)httprequest.endgetresponse(r);             stream poststream = myrequest.endgetrequeststream(r);             string postdata = "action=follow&access_token=966258514.201df4f.4b1c5015a7784a63aac00b9a902c4176";                        string postdata = postdata;             byte[] bytearray = encoding.utf8.getbytes(postdata);             poststream.write(bytearray, 0, bytearray.length);             poststream.close();             httprequest.begingetresponse(q =>              {                     httpwebrequest request = (httpwebrequest)q.asyncstate;                     httpwebresponse response = (httpwebresponse)request.endgetresponse(q);                     using (streamreader httpwebstreamreader = new streamreader(response.getresponsestream()))                     {                         string result = httpwebstreamreader.readtoend();                          dispatcher.begininvoke(() =>                         {                             button b = (button)sender;                             b.content = result;                             //for consideration                              //b.isenabled                           });                     }             }, httprequest);          }, myrequest);     } 

• final approach( i, personally, choose this)

is create tasks async , await http networking on windows phone