XAML Namescope Considerations

Any x:Name or Name attribute values assigned in the XAML content for Load input are written into a new XAML namescope that corresponds to the created object tree. This XAML namescope will remain distinct even if the object tree that is created is subsequently connected to the primary XAML namescope of the currently loaded Silverlight content root. This means that if you subsequently attempt to call FindName to find the named elements that came from the Load output, you will not find them if you call FindName from an object in the primary XAML namescope. A recommendation is to always retain a variable for the object that is the root of the object tree that is added. If you call FindName from that object, then you are working against the created XAML namescope and will be able to return objects in that tree by name, and bridge the gap between XAML namescopes. For details on XAML namescope concepts, see XAML Namescopes.