diff --git a/demo/Ursa.Demo.Desktop/Program.cs b/demo/Ursa.Demo.Desktop/Program.cs
index b74f9d3..4b5f190 100644
--- a/demo/Ursa.Demo.Desktop/Program.cs
+++ b/demo/Ursa.Demo.Desktop/Program.cs
@@ -1,10 +1,14 @@
-using System;
-using Avalonia;
+using Avalonia;
 using Avalonia.Dialogs;
 using Avalonia.Media;
+using System;
+using System.Runtime.Versioning;
 
 namespace Ursa.Demo.Desktop;
 
+[SupportedOSPlatform("windows")]
+[SupportedOSPlatform("linux")]
+[SupportedOSPlatform("macos")]
 class Program
 {
     // Initialization code. Don't use any Avalonia, third-party APIs or any
diff --git a/src/Ursa.Themes.Semi/Controls/NumPad.axaml b/src/Ursa.Themes.Semi/Controls/NumPad.axaml
index 372f7d3..f70a947 100644
--- a/src/Ursa.Themes.Semi/Controls/NumPad.axaml
+++ b/src/Ursa.Themes.Semi/Controls/NumPad.axaml
@@ -1,4 +1,4 @@
-<ResourceDictionary
+<ResourceDictionary
     xmlns="https://github.com/avaloniaui"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:u="https://irihi.tech/ursa">
diff --git a/src/Ursa/Controls/IPv4Box/IPv4Box.cs b/src/Ursa/Controls/IPv4Box/IPv4Box.cs
index cea14fa..5444bf3 100644
--- a/src/Ursa/Controls/IPv4Box/IPv4Box.cs
+++ b/src/Ursa/Controls/IPv4Box/IPv4Box.cs
@@ -1,4 +1,4 @@
-using System.Net;
+using System.Net;
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Controls.Metadata;
@@ -109,7 +109,7 @@ public class IPv4Box: TemplatedControl
     }
 
     /// <summary>
-    /// �Ƿ�ʹ��С��������
+    /// 是否使用小键盘输入
     /// </summary>
     internal bool IsTargetByNumPad 
     {
diff --git a/src/Ursa/Controls/NumPad/NumPad.cs b/src/Ursa/Controls/NumPad/NumPad.cs
index 6f81bb7..45228ea 100644
--- a/src/Ursa/Controls/NumPad/NumPad.cs
+++ b/src/Ursa/Controls/NumPad/NumPad.cs
@@ -1,4 +1,4 @@
-using Avalonia;
+using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Controls.Primitives;
 using Avalonia.Controls.Templates;
@@ -20,7 +20,7 @@ public class NumPad: TemplatedControl
     }
 
     /// <summary>
-    /// Target Ŀ���ڲ��� TextBox �� TextPresenter �ؼ� 
+    /// Target 目标内部的 TextBox 控件 
     /// </summary>
     private TextBox? _targetInnerText;
 
@@ -64,7 +64,7 @@ public class NumPad: TemplatedControl
         {
             if(existing.Target is IPv4Box pv4Box)
             {
-                pv4Box.IsTargetByNumPad = false; // ȡ�� IPv4Box �� NumPad ����ģʽ
+                pv4Box.IsTargetByNumPad = false; // 取消 IPv4Box 的 NumPad 输入模式
             }
             existing.Target = sender as InputElement;
             existing._targetInnerText = FindTextBoxInTarget((sender as InputElement)!);
@@ -107,7 +107,7 @@ public class NumPad: TemplatedControl
         if (Target is null || o is not NumPadButton b) return;
         var key = (b.NumMode ? b.NumKey : b.FunctionKey)?? Key.None;
 
-        // ��������ڲ�Ϊ TextBox ��Ŀ��ؼ�����ʹ�ø� TextBox ��Ϊ����Ŀ��
+        // 如果存在内部为 TextBox 的目标控件，则使用该 TextBox 作为输入目标
         var realTarget = _targetInnerText ?? Target;
         if (KeyInputMapping.TryGetValue(key, out var s))
         {
@@ -129,28 +129,28 @@ public class NumPad: TemplatedControl
         }
     }
     /// <summary>
-    /// ��Ŀ��ؼ��в��� TextBox �ؼ�
+    /// 在目标控件中查找 TextBox 控件
     /// </summary>
-    /// <param name="target">Ŀ��ؼ�</param>
-    /// <returns>�ҵ��� TextBox�����û���ҵ��򷵻� null</returns>
+    /// <param name="target">目标控件</param>
+    /// <returns>找到的 TextBox，如果没有找到则返回 null</returns>
     private static TextBox? FindTextBoxInTarget(InputElement target)
     {
-        // ���Ŀ�걾������ TextBox
+        // 如果目标本身就是 TextBox
         if (target is TextBox textBox)
             return textBox;
         
-        // ���Ŀ���� TemplatedControl�������Ѿ�Ӧ����ģ��
+        // 如果目标是 TemplatedControl，并且已经应用了模板
         if (target is TemplatedControl templatedControl && templatedControl.IsInitialized)
         {
-            // ����ͨ��ģ����� PART_TextBox
+            // 尝试通过模板查找 PART_TextBox
             if (templatedControl.GetTemplateChildren().FirstOrDefault(c => c is TextBox) is TextBox partTextBox)
                 return partTextBox;
         }
 
-        // ���Ŀ���� ILogical��ʹ�� LogicalTree ��չ��������
+        // 如果目标是 ILogical，使用 LogicalTree 扩展方法查找
         if (target is ILogical logical)
         {
-            // ʹ�� GetLogicalDescendants �������������߼��ӿؼ�
+            // 使用 GetLogicalDescendants 方法查找所有逻辑子控件
             var textBoxes = logical.GetLogicalDescendants().OfType<TextBox>();
             return textBoxes.FirstOrDefault();
         }
diff --git a/src/Ursa/Controls/NumericUpDown/IntUpDown.cs b/src/Ursa/Controls/NumericUpDown/IntUpDown.cs
index de1ac48..14c5fe0 100644
--- a/src/Ursa/Controls/NumericUpDown/IntUpDown.cs
+++ b/src/Ursa/Controls/NumericUpDown/IntUpDown.cs
@@ -32,6 +32,10 @@ public class NumericIntUpDown : NumericUpDownBase<int>
         var result = a - b;
         return result > Value ? Minimum : result;
     }
+    public override void Clear()
+    {
+        base.Clear();
+    }
 }
 
 public class NumericUIntUpDown : NumericUpDownBase<uint>
@@ -68,6 +72,10 @@ public class NumericUIntUpDown : NumericUpDownBase<uint>
         var result = a - b;
         return result > Value ? Minimum : result;
     }
+    public override void Clear()
+    {
+        base.Clear();
+    }
 }
 
 public class NumericDoubleUpDown : NumericUpDownBase<double>
@@ -91,6 +99,10 @@ public class NumericDoubleUpDown : NumericUpDownBase<double>
     protected override double? Add(double? a, double? b) => a + b;
 
     protected override double? Minus(double? a, double? b) => a - b;
+    public override void Clear()
+    {
+        base.Clear();
+    }
 }
 
 public class NumericByteUpDown : NumericUpDownBase<byte>
@@ -122,6 +134,10 @@ public class NumericByteUpDown : NumericUpDownBase<byte>
         var result = a - b;
         return (byte?)(result > Value ? Minimum : result);
     }
+    public override void Clear()
+    {
+        base.Clear();
+    }
 }
 
 public class NumericSByteUpDown : NumericUpDownBase<sbyte>
@@ -153,6 +169,10 @@ public class NumericSByteUpDown : NumericUpDownBase<sbyte>
         var result = a - b;
         return (sbyte?)(result > Value ? Minimum : result);
     }
+    public override void Clear()
+    {
+        base.Clear();
+    }
 }
 
 public class NumericShortUpDown : NumericUpDownBase<short>
@@ -184,6 +204,10 @@ public class NumericShortUpDown : NumericUpDownBase<short>
         var result = a - b;
         return (short?)(result > Value ? Minimum : result);
     }
+    public override void Clear()
+    {
+        base.Clear();
+    }
 }
 
 public class NumericUShortUpDown : NumericUpDownBase<ushort>
@@ -215,6 +239,10 @@ public class NumericUShortUpDown : NumericUpDownBase<ushort>
         var result = a - b;
         return (ushort?)(result > Value ? Minimum : result);
     }
+    public override void Clear()
+    {
+        base.Clear();
+    }
 }
 
 public class NumericLongUpDown : NumericUpDownBase<long>
@@ -246,6 +274,10 @@ public class NumericLongUpDown : NumericUpDownBase<long>
         var result = a - b;
         return result > Value ? Minimum : result;
     }
+    public override void Clear()
+    {
+        base.Clear();
+    }
 }
 
 public class NumericULongUpDown : NumericUpDownBase<ulong>
@@ -269,6 +301,10 @@ public class NumericULongUpDown : NumericUpDownBase<ulong>
     protected override ulong? Add(ulong? a, ulong? b) => a + b;
 
     protected override ulong? Minus(ulong? a, ulong? b) => a - b;
+    public override void Clear()
+    {
+        base.Clear();
+    }
 }
 
 public class NumericFloatUpDown : NumericUpDownBase<float>
@@ -292,6 +328,10 @@ public class NumericFloatUpDown : NumericUpDownBase<float>
     protected override float? Add(float? a, float? b) => a + b;
 
     protected override float? Minus(float? a, float? b) => a - b;
+    public override void Clear()
+    {
+        base.Clear();
+    }
 }
 
 public class NumericDecimalUpDown : NumericUpDownBase<decimal>
@@ -315,4 +355,9 @@ public class NumericDecimalUpDown : NumericUpDownBase<decimal>
     protected override decimal? Add(decimal? a, decimal? b) => a + b;
 
     protected override decimal? Minus(decimal? a, decimal? b) => a - b;
+
+    public override void Clear()
+    {
+        base.Clear();
+    }
 }