c# - Change image of a button that is on an element of a LongListSelector -

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i have longlistselector:

          <phone:longlistselector                         x:name="listamensajestablon"                         itemssource="{binding mensajes}"                         itemtemplate="{staticresource mensajestablondatatemplate}"                         selectionchanged="mensajetablonselected"/>

with itemtemplate:

       <datatemplate x:key="mensajestablondatatemplate">           <grid>               <button maxheight="85" maxwidth="95" minheight="85" minwidth="95" grid.column="1" horizontalalignment="right" verticalalignment="center"  click="button_click" borderbrush="transparent">                         <button.content>                             <image x:name="imagenfav" maxheight="75" maxwidth="75" minheight="75" minwidth="75"                                     source="{binding userfav, converter={staticresource booltoheart}}" verticalalignment="center" horizontalalignment="center"/>                         </button.content>               </button>           </grid>        </datatemplate>

this code-behind:

    private void button_click(object sender, routedeventargs e)     {         botonfavpulsado = true;         botonamor = (button)sender;     }       private void mensajetablonselected(object sender, selectionchangedeventargs e)     {         if(botonfavpulsado)         {                             var myitem = ((longlistselector)sender).selecteditem mensajetablon;              if(botonamor!=null)             {                 if (myitem.userfav)                 {                     botonamor.content = new image                         {                             source = new bitmapimage(new uri("icons/heart.red.png", urikind.relative))                         };                 }                 else                 {                     botonamor.content = new image                     {                         source = new bitmapimage(new uri("icons/heart.white.png", urikind.relative))                     };                 }             }             botonfavpulsado = false;            }         }

i want when press button inside element of longlistselector change picture . first time press button enters in function button_click , enters in function mensajetablonselected function , change image (good). problem second time press same button entering in function button_click function , not enter in function mensajetablonselected

resume : togglebutton in longitemselector working first time not second one

problem solved:

 private void mensajetablonselected(object sender, selectionchangedeventargs e)  {     if (((longlistselector)sender).selecteditem != null)     if(botonfavpulsado)     {                         var myitem = ((longlistselector)sender).selecteditem mensajetablon;          if(botonamor!=null)         {             if (myitem.userfav)             {                 botonamor.content = new image                     {                         source = new bitmapimage(new uri("icons/heart.red.png", urikind.relative))                     };             }             else             {                 botonamor.content = new image                 {                     source = new bitmapimage(new uri("icons/heart.white.png", urikind.relative))                 };             }         }         botonfavpulsado = false;         //unselect item         ((longlistselector)sender).selecteditem = null;       }     }

this solution have problem, function mensajetablonselected called again.


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