WPF Find window instance

I have created an instance of a window inside a class, but I am unable to access the instance of the window from my other class directly.开发者_高级运维

Is there a way to reference the window instance I have already created using a C# method, perhaps searching through the open app windows until it finds the Dashboard window I am trying to access?

Application.Current.Windows gives you all windows, shouldn't be hard to find using its type.

(As Ed pointed out this does not sound like very good design, so you might want to think about how you can get things done without messy window references)

System.Reflection.Assembly assemby = System.Reflection.Assembly.GetExecutingAssembly();
System.Type[] types = assemby.GetTypes();
var varWindows = types.ToList()
    .Where(current => current.BaseType == typeof(Window));
MessageBox.Show(varWindows.Count().ToString());

Application.Current.Windows gets us all instantiated windows, but the above code get us all windows.