Stupid DependencyProperty question

Question

I'm trying to bind the Forderground dependency property to my UIControl, so that it's drawn in the color the user wishes. Since myUiControl.Foderground autocopletes, I thought I could just bin it in the XAML file like this:

{Binding ElementName=rootControl, Path=Forderground}

When debugging VS says it cannot find the source for binding with this DependencyProperty.. but I couldn't figure out why this is..

Also how can I list all dependency properties of an object while debugging?

Answer 1

Can you confirm that your "rootControl" element is defined earlier in the xaml markup than your Binding holder? Usually the Bindings are bound to the earlier declared elements.

If you mean ImmediateWindow and IntelliSense usage while debugging than each dependency property metadata has usually public static access modifiers. You can for instance type "Control." and observe all the corresponding dependency properties, routed events and attached properties members.

Hope this helps.

Answer 2

UPDATE: If below wasn't enough for you, try downloading this sample and looking at it.

The ElementName needs to be set as the "x:Name" of your root control and the Path needs to be set to the Property on the root element you wish to bind to. Without the name it cannot find the element you are referring to (hence the initial error) and without the Path it doesn't bind to the correct property (check your output at runtime for an error).

Try this:

<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300">
<Grid x:Name="root" Background="Green">
    <Button Background="White" Margin="100">
        <TextBlock Background="{Binding ElementName=root, Path=Background}" Text="TESTING TESTING"/>
    </Button>
</Grid>