(#274) Avalonia update to .NET 9 (#283)

Author: adrianhall

samples/todoapp/TodoApp.Avalonia/Directory.Build.props

@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
     <Nullable>enable</Nullable>
-    <AvaloniaVersion>11.1.0</AvaloniaVersion>
+    <AvaloniaVersion>11.2.3</AvaloniaVersion>
   </PropertyGroup>
 </Project>

samples/todoapp/TodoApp.Avalonia/TodoApp.Avalonia.Android/TodoApp.Avalonia.Android.csproj

@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net8.0-android</TargetFramework>
-        <SupportedOSPlatformVersion>21</SupportedOSPlatformVersion>
+        <TargetFramework>net9.0-android</TargetFramework>
+        <SupportedOSPlatformVersion>34</SupportedOSPlatformVersion>
         <Nullable>enable</Nullable>
         <ApplicationId>com.CompanyName.TodoApp.Avalonia</ApplicationId>
         <ApplicationVersion>1</ApplicationVersion>

samples/todoapp/TodoApp.Avalonia/TodoApp.Avalonia.Desktop/TodoApp.Avalonia.Desktop.csproj

@@ -3,7 +3,7 @@
         <OutputType>WinExe</OutputType>
         <!--If you are willing to use Windows/MacOS native APIs you will need to create 3 projects.
         One for Windows with net8.0-windows TFM, one for MacOS with net8.0-macos and one with net8.0 TFM for Linux.-->
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <Nullable>enable</Nullable>
         <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
     </PropertyGroup>

samples/todoapp/TodoApp.Avalonia/TodoApp.Avalonia.iOS/TodoApp.Avalonia.iOS.csproj

@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net8.0-ios</TargetFramework>
-        <SupportedOSPlatformVersion>13.0</SupportedOSPlatformVersion>
+        <TargetFramework>net9.0-ios</TargetFramework>
+        <SupportedOSPlatformVersion>15.0</SupportedOSPlatformVersion>
         <Nullable>enable</Nullable>
     </PropertyGroup>
 

samples/todoapp/TodoApp.Avalonia/TodoApp.Avalonia.sln

@@ -7,8 +7,6 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TodoApp.Avalonia", "TodoApp
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TodoApp.Avalonia.Desktop", "TodoApp.Avalonia.Desktop\TodoApp.Avalonia.Desktop.csproj", "{ABC31E74-02FF-46EB-B3B2-4E6AE43B456C}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TodoApp.Avalonia.Browser", "TodoApp.Avalonia.Browser\TodoApp.Avalonia.Browser.csproj", "{1C1A049E-235C-4CD0-B6FA-D53AC418F4DA}"
-EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TodoApp.Avalonia.iOS", "TodoApp.Avalonia.iOS\TodoApp.Avalonia.iOS.csproj", "{EBD9022F-BC83-4846-9A11-6F7F3772DC64}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TodoApp.Avalonia.Android", "TodoApp.Avalonia.Android\TodoApp.Avalonia.Android.csproj", "{7AD1DAC8-7FBE-49D5-8614-7321233DB82E}"
@@ -32,10 +30,6 @@ Global
 		{ABC31E74-02FF-46EB-B3B2-4E6AE43B456C}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{ABC31E74-02FF-46EB-B3B2-4E6AE43B456C}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{ABC31E74-02FF-46EB-B3B2-4E6AE43B456C}.Release|Any CPU.Build.0 = Release|Any CPU
-		{1C1A049E-235C-4CD0-B6FA-D53AC418F4DA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{1C1A049E-235C-4CD0-B6FA-D53AC418F4DA}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{1C1A049E-235C-4CD0-B6FA-D53AC418F4DA}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{1C1A049E-235C-4CD0-B6FA-D53AC418F4DA}.Release|Any CPU.Build.0 = Release|Any CPU
 		{EBD9022F-BC83-4846-9A11-6F7F3772DC64}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{EBD9022F-BC83-4846-9A11-6F7F3772DC64}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{EBD9022F-BC83-4846-9A11-6F7F3772DC64}.Release|Any CPU.ActiveCfg = Release|Any CPU

samples/todoapp/TodoApp.Avalonia/TodoApp.Avalonia/TodoApp.Avalonia.csproj

@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <Nullable>enable</Nullable>
-        <LangVersion>latest</LangVersion>
+        <LangVersion>preview</LangVersion>
         <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
     </PropertyGroup>
 
@@ -16,8 +16,8 @@
         <PackageReference Include="Avalonia.Fonts.Inter" Version="$(AvaloniaVersion)"/>
         <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
         <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="$(AvaloniaVersion)"/>
-        <PackageReference Include="CommunityToolkit.Datasync.Client" Version="8.0.4" />
-        <PackageReference Include="CommunityToolkit.Mvvm" Version="8.3.0"/>
-        <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.11" />
+        <PackageReference Include="CommunityToolkit.Datasync.Client" Version="9.0.0" />
+        <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0"/>
+        <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.1" />
     </ItemGroup>
 </Project>

samples/todoapp/TodoApp.Avalonia/TodoApp.Avalonia/ViewModels/DesingTimeViewModels.cs renamed to samples/todoapp/TodoApp.Avalonia/TodoApp.Avalonia/ViewModels/DesignTimeViewModels.cs

@@ -22,13 +22,13 @@ public partial class TodoListViewModel(AppDbContext context) : ViewModelBase, ID
     /// Gets or sets if the data is currently being refreshed.
     /// </summary>
     [ObservableProperty]
-    private bool isRefreshing;
+    public partial bool IsRefreshing { get; set; }
 
     /// <summary>
     /// Gets or sets a collection of <see cref="TodoItemViewModel"/>s
     /// </summary>
     [ObservableProperty]
-    private ConcurrentObservableCollection<TodoItemViewModel> items = [];
+    public partial ConcurrentObservableCollection<TodoItemViewModel> Items { get; set; } = [];
 
     // -- Adding new Items --
 
@@ -68,7 +68,7 @@ private async Task AddItemAsync(CancellationToken cancellationToken)
     /// </summary>
     [ObservableProperty] 
     [NotifyCanExecuteChangedFor(nameof(AddItemCommand))] // This attribute will invalidate the command each time this property changes
-    private string? _newItemContent;
+    public partial string? NewItemContent { get; set; }
 
     /// <summary>
     /// Returns <c>true</c> if a new Item can be added. We require to have the NewItem some text.