Arunava Bhattacharjee
What is the basic difference between Dependency property and CLR property?
By Arunava Bhattacharjee in .NET on Aug 26 2014
  • Subhas Ambiger
    Apr, 2015 10

    The Normal CLR property and the dependency property look quite similar but the dependency property is more powerful and has more features. In WPF, dependency properties are used in Animation, Styles, Triggers, Templates, Validation, Data Binding, Layout etc.CLR property Syntaxprivate int count; public int Count {get{return count;}set{count = value;} }Dependency property syntax//Registering Dependency Property public static DependencyProperty PageSizeProperty = DependencyProperty.RegisterAttached("PageSize", typeof(int), typeof(AttachedPropertySample),new PropertyMetadata(25,new PropertyChangedCallback(OnPageSizePropertyChanged)));//PageSize property declaration public int PageSize {get{return (int) GetValue(PageSizeProperty);}set{SetValue(PageSizeProperty, value);} }Major features of Dependency Properties areValue Resolution CLR property reads value directly from private member while dependency property dynamically resolves value when you call GetValue() method of dependency property. The GetValue and SetValue methods are inherited from Dependency Object. You can read more about Dependency Property here.In Built Change Notification Dependency provides change notification when its value has been changed. You can specify Call Back while registering dependency property so user will get notification. This is mainly used in Data Binding.Value Inheritance If you specify dependency property to top element it will inherited to all child elements until child element specifically override the property. Dependency property value is resolved at runtime when you call GetValue() method.

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  • Arunava Bhattacharjee
    Aug, 2014 26

    CLR property uses a private field at the back to store the value,where as Dependency property uses dynamic value resolution to determine property value.

    • 0

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