添加项目文件。

Szmedi.Test/WriteParametersWin.xaml.cs

@@ -0,0 +1,37 @@
+using System.Windows;
+using System.Windows.Media;
+
+using Wpf.Ui.Appearance;
+
+namespace Szmedi.Test
+{
+    /// <summary>
+    /// WriteParametersWin.xaml 的交互逻辑
+    /// </summary>
+    public partial class WriteParametersWin
+    {
+        public WriteParametersWin()
+        {
+            InitializeComponent();
+            ApplicationThemeManager.Apply(ApplicationTheme.Light);
+            ApplicationThemeManager.Changed -= ApplicationThemeManager_Changed;
+            ApplicationThemeManager.Changed += ApplicationThemeManager_Changed;
+        }
+
+        private void ApplicationThemeManager_Changed(ApplicationTheme currentApplicationTheme, Color systemAccent)
+        {
+            ApplicationThemeManager.Apply(this);
+        }
+        private void Button_Click(object sender, RoutedEventArgs e)
+        {
+            if (ApplicationThemeManager.GetAppTheme() == ApplicationTheme.Light)
+            {
+                ApplicationThemeManager.Apply(ApplicationTheme.Dark);
+            }
+            else
+            {
+                ApplicationThemeManager.Apply(ApplicationTheme.Light);
+            }
+        }
+    }
+}