移除主窗口置顶功能

MainWindow.xaml

@@ -70,10 +70,6 @@
                 Content="生成PP钻带"
                 IsEnabled="{Binding CanGeneratePpDrillTape}"
                 Visibility="{Binding CanGeneratePpDrillTape, Converter={StaticResource BooleanToVisibilityConverter}}" />
-            <Button
-                Name="ToggleTopmostButton"
-                Click="ToggleTopmostButton_Click"
-                Content="{Binding TopmostButtonText}" />
         </ToolBar>
 
         <!--  主内容区域  -->

MainWindow.xaml.cs

@@ -35,10 +35,6 @@ namespace DrillTools
                 InitializeDragDrop();
                 //System.Diagnostics.Debug.WriteLine("拖放功能初始化完成");
 
-                // 设置默认置顶状态
-                this.Topmost = viewModel.IsTopmost;
-                //System.Diagnostics.Debug.WriteLine("置顶状态设置完成");
-
                 // 如果有初始文件路径，在窗口加载完成后自动加载
                 if (!string.IsNullOrEmpty(initialFilePath))
                 {
@@ -297,15 +293,6 @@ namespace DrillTools
             ViewModel.MoveSelectedToolDown();
         }
 
-        /// <summary>
-        /// 置顶按钮点击事件
-        /// </summary>
-        private void ToggleTopmostButton_Click(object sender, RoutedEventArgs e)
-        {
-            ViewModel.ToggleTopmost();
-            this.Topmost = ViewModel.IsTopmost;
-        }
-
         /// <summary>
         /// 刀具列表双击事件
         /// </summary>

MainWindowViewModel.cs

@@ -26,7 +26,6 @@ namespace DrillTools
         private bool _canMoveUp;
         private bool _canMoveDown;
         private string _originalFilePath = string.Empty;
-        private bool _isTopmost = false; // 默认不顶置
         private string _fileNameWithoutExtension = string.Empty;
         private double _minDrillDiameter;
         private double _minSlotDiameter;
@@ -174,27 +173,6 @@ namespace DrillTools
             set => SetProperty(ref _shouldCheckSortFileOnLoad, value);
         }
 
-        /// <summary>
-        /// 窗口是否置顶
-        /// </summary>
-        public bool IsTopmost
-        {
-            get => _isTopmost;
-            set
-            {
-                if (SetProperty(ref _isTopmost, value))
-                {
-                    // 当IsTopmost改变时，通知TopmostButtonText属性也已更改
-                    OnPropertyChanged(nameof(TopmostButtonText));
-                }
-            }
-        }
-
-        /// <summary>
-        /// 置顶按钮显示文本
-        /// </summary>
-        public string TopmostButtonText => IsTopmost ? "取消置顶" : "窗口置顶";
-
         /// <summary>
         /// 文件名（不包含后缀）
         /// </summary>
@@ -1683,14 +1661,6 @@ M30";
             }
         }
 
-        /// <summary>
-        /// 切换窗口置顶状态
-        /// </summary>
-        public void ToggleTopmost()
-        {
-            IsTopmost = !IsTopmost;
-        }
-
         /// <summary>
         /// 更新最小直径信息
         /// </summary>