如何使 XAML 视图（页面）从使用 UserControl 作为泛型类型的类继承

Question

I have an issue, and I don't know if I can do that, or if there is another way to do that. I have an abstract class called "BasePage", it is my .NET Standard library, so I can't access to System.Windows namespace. Its declaration is:

public abstract class BasePage<VR> where VR : new()

EDIT: The class above has a public property to access to VR

So now, for each platform (WPF, Xamarin, etc) I have to create its own implementation of the class begin VR the content control of each platform (UserControl for WPF, for example). I already did it and this is:

public class WindowsBasePage : BasePage<UserControl>

Now, every time I want to create a page to add content to a window, I have to create something like this:

 public partial class UserPassPage : WindowsBasePage
 {
     public UserPassPage()
     {
         InitializeComponent();
     }
 }

The problem becomes when I have to set it in the XAML file (the View). I can create it and it builds:

<local:WindowsBasePage x:Class="Bitture.AppManager.Manager.UserPassPage"
    [...]
    xmlns:local="clr-namespace:Bitture.AppManager.Manager"
    mc:Ignorable="d" >
</local:WindowsBasePage>

but I can't add components (like buttons, text, grids, stackpanels, etc). I want to know If I can do it with my current code or there is something I have to change. Because I have to access to the generic type WindowsBasePage that inherits from

class WindowsBasePage : BasePage<UserControl>

Answer 1

I am not sure what you are trying to do here but you can't add UIElements to a custom class of yours that doesn't inherit from any of the common WPF base classes such as for example Panel or ContentControl , and expect it to be rendered as a UserControl or some other WPF control.

This won't work. WPF knows about how to render WPF controls but it doesn't know how to render a custom BasePage<UserControl> .