How to use Prism within an ElementHost

Question

I\'m new to Prism and I am attempting to host a Prisim control within an ElementHost. I seem to be missing something very basic. I have a single WinForm that contains an El

Answer 1

The reason is this code in Prism:

private static bool RegionManager::IsInDesignMode(DependencyObject element)
{
    // Due to a known issue in Cider, GetIsInDesignMode attached property value is not enough to know if it's in design mode.
    return DesignerProperties.GetIsInDesignMode(element) || Application.Current == null
        || Application.Current.GetType() == typeof(Application);
}

The reason is that for the non-WPF application the Application.Current is NULL!

The solution:

1. Create an empty class that will inherit from System.Windows.Application. (Name doesn’t matter):

At the point of entry to a plug-in execute the following code:

public class MyApp : System.Windows.Application
{
}

if (System.Windows.Application.Current == null)
{
    // create the Application object
    new MyApp();
}

This is it – now you have an Application.Current that is not null and it’s not equal to typeof(Application).