c# - Value Converter not Being Called XAML -

i have put breakpoints inside value converter , never triggered, page renders no image being shown.

the xaml:

xmlns:datatypes="clr-namespace:datatypes_portable;assembly=datatypes_winphone8" ... <phone:phoneapplicationpage.resources>     <datatypes:winphone8imageconverter x:key="imageconverter" /> </phone:phoneapplicationpage.resources> ... <image x:name="levelimage" horizontalalignment="left" height="auto" verticalalignment="top" width="auto" margin="0" grid.columnspan="5" source="{binding converter={staticresource imageconverter}, path=app.main.game.currentlevel.currentpart.image}"/> 

the cs:

public class winphone8imageconverter : ivalueconverter {     public object convert(object value, type targettype, object parameter, cultureinfo culture)     {         var imageprovider = value winphone8imageprovider;         return imageprovider.image;     }      public object convertback(object value, type targettype, object parameter, cultureinfo culture)     {         throw new notimplementedexception();     } } 

from can understand (by process of trial , elimination , looking @ exceptions thrown) problem coming part of xaml trying bind value.

at breakpoint value @ app.main.game.currentlevel.currentpart.image being set correctly (ie instance of winphone8imageprovider).

it turns out nothing converter @ all. value binding before image had loaded (so source empty). future reference check make sure implementing theinotifypropertychanged correctly in view models.