How to bind button Content to Dynamic Resource programmatically

Question

I am trying to bind programmatically the Content property of my WPF Button to a Dynamic Resource (Business Object) I have previously defined using a given Path. So far I tried the following approaches with no luck:

My Business Object is defined as a resource:

<Window.Resources>
   <env:PartyType x:Key="myParty" FullName="JOHN"/>
</Window.Resources>

I tried binding to my button programmatically like this:

        Binding binding = new Binding();
        binding.Source = this.Resources["myParty"];
        binding.Path = new PropertyPath("FullName");
        btn.SetBinding(ContentProperty, binding);

But apparently when I serialize to XAML its trying to serialize the whole Party Object, and I just want to keep a binding reference to my resource, so this option doesn't work. My second option was:

btn.SetResourceReference(ContentProperty,"myParty");

That gets serialized to XAML as:

<av:Button Content="{av:DynamicResource myParty}"/>

But I don't know how to specify my Path=FullName so it can display the Party.FullName and not the Party.Type().

Any ideas on how to achieve this?

Thanks in advance,

Terkel · Accepted Answer · 2012-03-30 14:15:01Z

1

Assign the dynamic resource to the DataContext and then create your binding without setting the Source property

btn.SetResourceReference(DataContextProperty,"myParty");

Binding binding = new Binding();
binding.Path = new PropertyPath("FullName");
btn.SetBinding(ContentProperty, binding);

Now if you already depand on the button's DataContext, then you need set a Label as the button's content and set the resource and binding on the label.

answered Mar 30, 2012 at 14:15

Terkel

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5 Comments

Adolfo Perez Over a year ago

Thanks Simon, that part worked fine. Now, I decided to set the DataContext in the XAML for the parent control (Canvas). Everything works fine, but when I Load the serialized XAML it doesn't show the bound data, any ideas on what could it be?

Terkel Over a year ago

@AdolfoPerez, Does the serialized XAML include the binding? My only guess is that the binding is not being serialized.

Adolfo Perez Over a year ago

Yes, the Serialized XAML includes the binding as follows: <av:Button Content="{av:Binding Path=FullName, Source={x:Null}}" When I inspect my regenerated object it does include the binding, but for some reason the Content is set to null

Terkel Over a year ago

Hmm, try looking for binding errors in the output window. Some time back I wrote an article on debuggeing data bindings you can find it here, I think it should allow you to figure out why the binding doesn't work as expected.

Adolfo Perez Over a year ago

I'll have to do that. Thanks again for all your help @SimonBangKerkildsen

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