Question

How can I use something like the “#if” directive inside XAML. I’ve declared a credentials key for my Bing Maps control and I want to turn off the key when I’m not live. The key is in a resource dictionary. How can I disable this in debug?

Answer 1

I haven’t tested this, but I wonder if this or something like it would work.

You could declare this public property in whatever the map’s DataContext is (view model or otherwise).

public CredentialsProvider MyCredentialsProvider
{
#if DEBUG
    return null;
#else
    return new ApplicationIdCredentialsProvider(MyResources.MyCredentialsKey);
#endif
}

(MSDN says we should use ApplicationIdCredentialsProvider.)

Then you can simply bind to this property, since CredentialsProvider is a dependency property:

<m:Map CredentialsProvider="{Binding MyCredentialsProvider}"/>