Wpf usercontrol dependency property not updating


09-Jan-2018 21:54

NET languages are typically termed 'CLR properties' (Where CLR refers to the Common Language Runtime) so that we know which type of property we are talking about!

CLR properties are simply shorthand for methods used to access a backing field.

As you can see from the above, databinding is a feature of WPF and Silverlght dependency property mechanism.

The type of properties that developers are used to from other .

We'll start with a simple model object, or business object, and see how we can take the properties that this object exposes and display them in the UI using standard controls.

We will also see how we can respond to event raised by these controls in order to update our model.

binding is used, changes to the target property, which typically occur due to user interactions, are propagated from the target to the source.

In the example below, a dependency property 'Total Goals' is defined on a dependency object.

By convention, this dependency property is exposed as a public static field on the dependency object.

Yet for all its power, it is a little complex and that is my reason for launching into this blog series.

The rough outline for this series is as follows: To understand what databinding is and the service it provides us with, it is worth looking at how you wire-up a user-interface without using databinding.

For each model property that we wish to expose to our user via the view, we have to add code to perform each of these three tasks.