#126 – Reacting to a Dependency Property Change Using Binding

One way to react to a dependency property’s value changing is by binding the property of one control to the property of another control.

The idea with binding is that there is a source object and property, where the data is coming from, and a target object and property.

Here’s an example where we bind the contents of a Label control to the value of a Slider.

        <Slider Name="slider1" Maximum="100" />
        <Label Name="lblTest" Content="{Binding ElementName=slider1, Path=Value}"/>

The Label is the target control.  We bind its Content property to the Slider control’s Value content.  When a user slides the slider, its value will change and the new value will be displayed in the Label.