Conversely, user controls cannot be templated as the XAML is embedded. Net developer then you will likely start with simple CLR properties. Like this: Setting such a property is a snap, and it works just fine. A data binding target MUST be a dependency property.
The simplest user control might look like this: The simplest use of a user control would be like this: In the code above, I simply declare the user control and the rest is done for me. You can reference it in the code behind or you can reference it in the XAML. Once we know the property must be a dependency property (which simply means the property must be backed by a dependency property object) we can start to build it out: In the code above, we create our Text property as a dependency property and we introduce a reusable method called Set Value Dp() which uses the Call Member Name introduced in . Call Member Name let’s you reference your property name without creating a literal string in your code-behind.
It made sense, therefore, when I needed almost the exact same operations but with four different classes that inherit from the same model to use the same view.
To do this I needed a way to define a “View Mode” of the user control. That much is obvious but that there wasn’t some easy, obvious solution on how to bind a dependency property to a property in the view model.
A property that is backed by the WPF property system is known as a dependency property.
This overview describes the WPF property system and the capabilities of a dependency property.
It should have been obvious and I’m not sure why I hit on so many wrong answers but here is my solution: Add the dependency property to My View that will bind to the view model This manually sets the binding to a property “View Mode” that is in my view model.
So “View Mode” exists in both the view and the view model and the manual binding will keep everything in sync.This topic assumes that you have some basic knowledge of the CLR and object-oriented programming.In order to follow the examples in this topic, you should also understand XAML and know how to write WPF applications.By convention, the name of the field should end with .The first parameter is the name of the property itself (without the suffix).The last parameter is optional and can provide a default value for the property and/or a method to call whenever the property changes.