如何在 WinUI 3 中使用 Xaml 继承？

Question

从 answers like this 来看，xaml 继承似乎适用于 WPF 和 UWP。

它适用于 WinUI 3 吗？

使用这样的代码：

    <local:YourBaseClass x:Class="MyApp.ChildClass"
        ...
        xmlns:local="clr-namespace:MyApp">
    </local:YourBaseClass>

我收到错误：

Error WMC0001 Unknown type 'YourBaseClass' in XML namespace 'clr-namespace:MyApp'

Answer 1

Does it work for WinUI 3?

是的。几乎一模一样

创建继承自 Microsoft.UI.Xaml.Window 的基础 class:

 public class YourBaseClass : Microsoft.UI.Xaml.Window
 {
     public YourBaseClass() : base()
     {
         Title = "Title...";
     }
 }

修改MainWindow.xaml.cs继承新基class:

 public sealed partial class MainWindow : YourBaseClass
 {
     public MainWindow()
     {
         this.InitializeComponent();
     }

     private void myButton_Click(object sender, RoutedEventArgs e)
     {
         myButton.Content = "Clicked";
     }
 }

修改MainWindow.xaml中的根元素：

 <local:YourBaseClass
     x:Class="WinUI3App.MainWindow"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:local="using:WinUI3App"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     mc:Ignorable="d">

     <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
         <Button x:Name="myButton" Click="myButton_Click">Click Me</Button>
     </StackPanel>
 </local:YourBaseClass>

如何在 WinUI 3 中使用 Xaml 继承？

How to use Xaml inheritance in WinUI 3?

xaml

winui-3