feat: init avalonia demo.

src/Shared/HandyControlDemo_Shared/Tools/HighlightingProvider.cs

@@ -10,7 +10,9 @@ namespace HandyControlDemo.Tools;
 
 internal class HighlightingProvider
 {
-    public static HighlightingProvider Default = new Lazy<HighlightingProvider>(() => new HighlightingProvider()).Value;
+    private static readonly Lazy<HighlightingProvider> DefaultInternal = new(() => new HighlightingProvider());
+
+    public static HighlightingProvider Default => DefaultInternal.Value;
 
     protected static readonly Lazy<IHighlightingDefinition> DefaultDefinition = new(() => HighlightingManager.Instance.GetDefinition("C#"));
 

src/Shared/HandyControlDemo_Shared/UserControl/Main/LeftMainContent.xaml

@@ -44,7 +44,7 @@
                                     <StackPanel Orientation="Horizontal">
                                         <Rectangle Width="16" Height="16" Fill="{Binding ImageBrush}"/>
                                         <hc:HighlightTextBlock Margin="6,0,0,0" SourceText="{ex:Lang Key={Binding Name}}" QueriesText="{Binding QueriesText}"/>
-                                        <Path Visibility="{Binding IsNew,Converter={StaticResource Boolean2VisibilityConverter}}" VerticalAlignment="Center" Data="{StaticResource NewGeometry}" Stretch="Uniform" Margin="10,0,0,0" Width="30" Height="14" Fill="{DynamicResource DangerBrush}"/>
+                                        <Path Visibility="{Binding IsNew,Converter={StaticResource Boolean2VisibilityConverter}}" VerticalAlignment="Center" Data="{StaticResource NewGeometry}" Stretch="Uniform" Margin="10,0,0,0" Width="30" Height="14" Fill="{DynamicResource AccentBrush}"/>
                                     </StackPanel>
                                 </DataTemplate>
                             </ListBox.ItemTemplate>

src/Shared/HandyControlDemo_Shared/ViewModel/ViewModelLocator.cs

@@ -8,6 +8,11 @@ namespace HandyControlDemo.ViewModel;
 
 public class ViewModelLocator
 {
+    private static readonly Lazy<ViewModelLocator> InstanceInternal = new(() =>
+        Application.Current.TryFindResource("Locator") as ViewModelLocator, isThreadSafe: true);
+
+    public static ViewModelLocator Instance => InstanceInternal.Value;
+
     public ViewModelLocator()
     {
         SimpleIoc.Default.Register<DataService>();
@@ -41,9 +46,6 @@ public class ViewModelLocator
         SimpleIoc.Default.Register<InputElementDemoViewModel>();
     }
 
-    public static ViewModelLocator Instance = new Lazy<ViewModelLocator>(() =>
-        Application.Current.TryFindResource("Locator") as ViewModelLocator).Value;
-
     #region Vm
 
     public MainViewModel Main => SimpleIoc.Default.GetInstance<MainViewModel>();