Issue with FontWeight property in Custom Control

Question

I have a user control which contains new FontWeight DependencyProperty as shown below. But when I set this property from XAML, it throws exception "Failed to create a 'Windows.UI.Text.FontWeight' from the text 'Normal'." It works properly if I set it through
code.
public new FontWeight FontWeight
get
return (FontWeight)(GetValue(FontWeightProperty));
set
SetValue(FontWeightProperty, value);
In the similar manner, I have created FontStyle property also but it does not throw any exception from XAML.

Answer 1

Sorry, you're right TypeConverters are not supported. The only option I see to be notified when the FontWeight (or whatever) property on your Control has been changed, is to add another property with exactly the same type, but of course another name, and
use databinding on the property you wish to monitor.
<Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
<local:FontWeightTestUserControl Name="richEditBoxContainerUserControl" FontWeight="Black"
FontWeight2="{Binding ElementName=richEditBoxContainerUserControl, Path=FontWeight}"/>
</Grid>
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Text;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Documents;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
// The User Control item template is documented at http://go.microsoft.com/fwlink/?LinkId=234236
namespace TestRichEdit
public sealed partial class FontWeightTestUserControl : UserControl
private FontWeight _fontWeight;
public static readonly DependencyProperty FontWeight2Property = DependencyProperty.Register("FontWeight2", typeof(FontWeight),
typeof(FontWeightTestUserControl), new PropertyMetadata(null, FontWeightTestUserControl.FontWeight2PropertyChangedCallback));
private static void FontWeight2PropertyChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
((FontWeightTestUserControl)d).FontWeight2 = (FontWeight)e.NewValue;
public FontWeightTestUserControl()
this.InitializeComponent();
public FontWeight FontWeight2
get
return this._fontWeight;
set
this._fontWeight = value;
As soon as the FontWeight property is set in XAML the FontWeight2 property is also updated. That's your queue.