I am trying to use the default value of the textblock's property for a control by using:
public static readonly DependencyProperty FontFamilyProperty = DependencyProperty.Register(
"FontFamily", typeof(FontFamily), typeof(IMTextBlock), new PropertyMetadata(TextBlock.TextProperty.GetMetadata(typeof(FontFamily)).DefaultValue));
I am getting this error:
The invocation of the constructor on type 'Common.Infrastructure.Controls.IMTextBlock' that matches the specified binding constraints threw an exception.
What is the right way to do this?
TextBlock.TextProperty.GetMetadata(typeof(FontFamily)).DefaultValue
is not getting me the correct default value, or maybe I am not using it correctly.
The type you pass to GetMetaData
is the not the property type, its the owner type. Hence you should be using:-
TextBlock.FontFamilyProperty.GetMetadata(typeof(TextBlock)).DefaultValue