Again I struck in a framework bug which doesn't allow us to declare and use a dependency property of Type Uri.ie If you declare a dependency property of type Uri and try to set from xaml , will throw an error at runtime.Here is scenario.
You are creating a custom control and you need to have a dependency of type Uri Named Source.
You declared as follows.
public Uri Source
{
get { return (Uri)GetValue(SourceProperty); }
set { SetValue(SourceProperty, value); }
}
public static readonly DependencyProperty SourceProperty =
DependencyProperty.Register("Source", typeof(Uri), typeof(MediaItem), new PropertyMetadata(OnSourceChanged));
static void OnSourceChanged(object sender, DependencyPropertyChangedEventArgs args) { }
Fine.But If you create its instance in xaml as follows and run the application it will throw an error.
<ctrl:MediaItem x:Name="item" Source="dock.jpg" />
The error is AG_E_PARSER_BAD_PROPERTY_VALUE.
Microsoft has identified this error and rectified.Details here
Until the next version change the property type into string and use converters in xaml.
Or in the setter of a dummy property convert the value into Uri and keep in actual property.
