Actually, this post has a way too fancy title , because in fact I will merely show that enum-based dependency properties are IntelliSense compatible “out-of-the-box”. (by the way, if you know all about dependcy properties: simply read the line in bold and you’ll know all there is to know).
When creating a (WP7/SL/WPF) usercontrol, one often ends up creating one more dependency properties (DP). Most of the times you only want a discrete set of possible values that can be assigned to the DP. The logical choice then of course is to have an enum-based DP.
Now, for the Intellisense to work it is important that you define the enum type OUTSIDE the usercontrols class. For example, suppose we have define the following enum:
public enum GraphTypes {Default, Point, Line}
Now, all that remains is to add a DP that uses this enum (remember that you can use the ‘dependencyproperty’ snippet that comes with VS):
public static readonly DependencyProperty GraphTypeProperty =
DependencyProperty.Register("GraphType", typeof (GraphTypes), typeof (GraphControl), new PropertyMetadata(GraphTypes.Default));
public GraphTypes GraphType
{
get { return (GraphTypes) GetValue(GraphTypeProperty); }
set { SetValue(GraphTypeProperty, value); }
}
Once you now add the usercontrol elsewhere in your xaml-code, IntelliSense will happily show what values can be assigned to the DP:
There we go. That’s all there was too it.
Next post I’ll show how to create a WP7 user control to plot graphs using data binding. Consider some of the code here a sneak preview.
