Added .net9 build target

Examples/ImageCreationUI/App.xaml.cs

@@ -1,14 +1,5 @@
-using System.Configuration;
-using System.Data;
-using System.Windows;
+using System.Windows;
 
-namespace ImageCreationUI
-{
-    /// <summary>
-    /// Interaction logic for App.xaml
-    /// </summary>
-    public partial class App : Application
-    {
-    }
+namespace ImageCreationUI;
 
-}
+public partial class App : Application;

Examples/ImageCreationUI/ImageCreationUI.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>net8.0-windows</TargetFramework>
+    <TargetFramework>net9.0-windows</TargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <UseWPF>true</UseWPF>