C# Avalonia动态加载xaml和cs实例

扩展请参考

1. https://www.cnblogs.com/dalgleish/p/18972924

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NonCompiledXaml.axaml代码

1. <Window xmlns="https://github.com/avaloniaui"
2.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
3.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
4.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
5.         mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
6.         x:Class="AvaloniaUI.NonCompiledXaml"
7.         Title="NonCompiledXaml">
8.     <ScrollViewer>
9.         <StackPanel Name="mainPanel" Background="#f0f0f0">
10.             <TextBlock Text="" FontFamily="{StaticResource IconFont}" FontSize="20" Margin="5" HorizontalAlignment="Center"/>
11.             <Button Content="加载动态内容" Click="Button_Click" Margin="0,0,0,5"/>
12.         </StackPanel>
13.     </ScrollViewer>
14. </Window>

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NonCompiledXaml.axaml.cs代码，其中Window1是一个简单的Window窗口。新扩展已经支持多个cs文件编译，并且支持AvaloniaUseCompiledBindingsByDefault = true

1. using Avalonia;
2. using Avalonia.Controls;
3. using Avalonia.Interactivity;
4. using Avalonia.Platform;
5. using Shares.Avalonia;
6. using System;
7. using System.IO;
8. using System.Text;
9. using System.Threading.Tasks;
11. namespace AvaloniaUI;
13. public partial class NonCompiledXaml : Window
14. {
15.     public NonCompiledXaml()
16.     {
17.         InitializeComponent();
18.     }
19.     private async void Button_Click(object? sender, RoutedEventArgs e)
20.     {
21.         Control control =  await this.RunResourceAsync("Window1");
22.         mainPanel.Children.Add(control);
23.         var xaml = @"
24. <UserControl xmlns='https://github.com/avaloniaui'
25.              xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
26.              x:Class='SampleView'>
27.     <StackPanel Margin='20'>
28.         <TextBlock Text='{Binding Message}' FontSize='24' Foreground='Blue'/>
29.     </StackPanel>
30. </UserControl>
31. ";
33.         var code = @"
34. using Avalonia.Controls;
35. using CommunityToolkit.Mvvm.ComponentModel;
36. using CommunityToolkit.Mvvm.Input;
38. public class SampleView : UserControl
39. {
40.     public SampleView()
41.     {
42.         this.DataContext = new ViewModel();
43.     }
45.     public class ViewModel : ObservableObject
46.     {
47.          private string message = ""Hello from dynamic SampleView!"";
49.         public string Message
50.         {
51.             get => message;
52.             set => SetProperty(ref message, value);
53.         }
54.     }
55. }
56. ";
57.         Control xamlControl = await this.RunXamlAsync(xaml, code);
58.         mainPanel.Children.Add(xamlControl);
60.         var xaml1 = @"<Window xmlns=""https://github.com/avaloniaui""
61.         xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml""
62.         xmlns:d=""http://schemas.microsoft.com/expression/blend/2008""
63.         xmlns:mc=""http://schemas.openxmlformats.org/markup-compatibility/2006""
64.                  xmlns:local=""using:AvaloniaUI""
65.         mc:Ignorable=""d"" d:DesignWidth=""800"" d:DesignHeight=""450""
66.         x:AvaloniaUI.Window2""
67.         Title=""Window2"">
68.         <StackPanel Margin=""20"">
69.                 <TextBlock x:DataType=""local:ViewModel"" Text=""{Binding Message}"" FontSize=""24"" Foreground=""Blue""/>
70.         </StackPanel>
71. </Window>
72. ";
73.         var code1 = @"using Avalonia;
74. using Avalonia.Controls;
75. using CommunityToolkit.Mvvm.ComponentModel;
77. namespace AvaloniaUI;
79. public partial class Window2 : Window
80. {
81.     public Window2()
82.     {
83.         this.DataContext = new ViewModel();
84.     }
85. }
86. public class ViewModel : ObservableObject
87.     {
88.         private string message = ""Hello from dynamic Window2View!"";
90.         public string Message
91.         {
92.             get => message;
93.             set => SetProperty(ref message, value);
94.         }
95.     }
96. ";
97.         Control xamlControl1 = await this.RunXamlAsync(xaml1, code1,"Window2");
98.         mainPanel.Children.Add(xamlControl1);
99.     }
100. }

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运行效果

 

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