尝试将DataTemplate分配给WPF窗口时，Visual Studio崩溃

I'm a relative novice when I comes to WPF, but I'm trying to create a reusable template for my Windows. The end goal is to have a template that can be applied to all dialog windows in my application, with customizable content. Ultimately I want the template to permit I'm a relative novice when I comes to WPF, but