Windows Phone 7 - TextBlock Text binding to ViewModel not returning anythinig -

i have built view model , listbox binds obervablecollection, textbox using temp url wont bind , return data. not getting errors either on compile or run

viewmodel:

public class homepagemodel:inotifypropertychanged {     public textblock bgrimg{get;set;}     public observablecollection<menuitem> menu {get; private set;}      public homepagemodel()     {         this.menu = new observablecollection<menuitem>();     }      public void load()     {         bgrimg = new textblock();         bgrimg.text = "/windows7mobileclient;component/images/desert.jpg";         //bgrimg = ;         menu.add(new menuitem("feed",""));         menu.add(new menuitem("messages",""));         menu.add(new menuitem("media",""));         menu.add(new menuitem("favourites",""));         menu.add(new menuitem("freinds",""));     }      public event propertychangedeventhandler propertychanged;     private void notifypropertychanged(string propertyname)     {         propertychangedeventhandler handler = propertychanged;         if (null != handler)         {             handler(this, new propertychangedeventargs(propertyname));         }     } } 

homepage.xaml

<controls:panoramaitem header="menu">             <grid>                 <textblock text="{binding bgrimg}"/>                 <listbox x:name="firstlistbox" margin="0,0,-12,0" itemssource="{binding menu}" mouseleftbuttonup="firstlistbox_mouseleftbuttonup" >                     <listbox.itemtemplate>                         <datatemplate>                             <stackpanel margin="0,0,0,17" width="432">                                 <textblock text="{binding label}" textwrapping="wrap" style="{staticresource phonetextextralargestyle}"/>                             </stackpanel>                         </datatemplate>                     </listbox.itemtemplate>                 </listbox>             </grid>         </controls:panoramaitem> 

i eventual want use string panorama background image. sorry if seems realy simply.

chris

you need call notifypropertychanged() in setters items wish bind to.