add:白板页面删除

Ink Canvas/MainWindow.xaml

@@ -4963,6 +4963,13 @@
                                                                                 Text="{Binding Index}">
                                                                             </TextBlock>
                                                                         </Border>
+                                                                        <Button Width="24" Height="24" HorizontalAlignment="Right" VerticalAlignment="Top" Margin="4"
+                                                                                ToolTip="删除此页"
+                                                                                Click="WhiteBoardPageListItem_DeleteClick"
+                                                                                Background="#CC000000" Foreground="White"
+                                                                                BorderThickness="0" Padding="0" Cursor="Hand">
+                                                                            <ui:SymbolIcon Symbol="Delete" />
+                                                                        </Button>
                                                                     </Grid>
                                                                 </Border>
                                                             </ui:SimpleStackPanel>
@@ -7124,6 +7131,13 @@
                                                                                 Text="{Binding Index}">
                                                                             </TextBlock>
                                                                         </Border>
+                                                                        <Button Width="24" Height="24" HorizontalAlignment="Right" VerticalAlignment="Top" Margin="4"
+                                                                                ToolTip="删除此页"
+                                                                                Click="WhiteBoardPageListItem_DeleteClick"
+                                                                                Background="#CC000000" Foreground="White"
+                                                                                BorderThickness="0" Padding="0" Cursor="Hand">
+                                                                            <ui:SymbolIcon Symbol="Delete" />
+                                                                        </Button>
                                                                     </Grid>
                                                                 </Border>
                                                             </ui:SimpleStackPanel>

Ink Canvas/MainWindow_cs/MW_BoardControls.cs

@@ -476,45 +476,60 @@ namespace Ink_Canvas
         /// <summary>
         /// 处理白板页面删除按钮点击事件，删除当前白板页面
         /// </summary>
-        /// <param name="sender">事件发送者</param>
-        /// <param name="e">事件参数</param>
-        /// <remarks>
-        /// - 隐藏图片选择工具栏
-        /// - 清除当前画布内容
-        /// - 重新排列剩余页面的历史记录
-        /// - 更新当前页面索引和页面总数
-        /// - 恢复剩余页面内容
-        /// - 更新页码显示
-        /// - 启用添加按钮（如果页面总数小于99）
-        /// </remarks>
         private void BtnWhiteBoardDelete_Click(object sender, RoutedEventArgs e)
         {
-            // 隐藏图片选择工具栏
+            DeleteWhiteBoardPageByIndex(CurrentWhiteboardIndex);
+        }
+
+        /// <summary>
+        /// 按页码删除指定白板页（用于预览列表等）。仅当总页数大于 1 时有效。
+        /// </summary>
+        /// <param name="pageIndex">要删除的页码（1 到 WhiteboardTotalCount）</param>
+        private void DeleteWhiteBoardPageByIndex(int pageIndex)
+        {
+            if (WhiteboardTotalCount <= 1 || pageIndex < 1 || pageIndex > WhiteboardTotalCount)
+                return;
+
             if (currentSelectedElement != null)
             {
-                // 保存当前编辑模式
                 var previousEditingMode = inkCanvas.EditingMode;
                 UnselectElement(currentSelectedElement);
-                // 恢复编辑模式
                 inkCanvas.EditingMode = previousEditingMode;
                 currentSelectedElement = null;
             }
 
+            if (pageIndex == CurrentWhiteboardIndex)
+            {
                 ClearStrokes(true);
-
                 if (CurrentWhiteboardIndex != WhiteboardTotalCount)
                     for (var i = CurrentWhiteboardIndex; i <= WhiteboardTotalCount; i++)
                         TimeMachineHistories[i] = TimeMachineHistories[i + 1];
                 else
                     CurrentWhiteboardIndex--;
-
                 WhiteboardTotalCount--;
-
                 RestoreStrokes();
+            }
+            else if (pageIndex < CurrentWhiteboardIndex)
+            {
+                for (var i = pageIndex; i < WhiteboardTotalCount; i++)
+                    TimeMachineHistories[i] = TimeMachineHistories[i + 1];
+                TimeMachineHistories[WhiteboardTotalCount] = null;
+                WhiteboardTotalCount--;
+                CurrentWhiteboardIndex--;
+            }
+            else
+            {
+                for (var i = pageIndex; i < WhiteboardTotalCount; i++)
+                    TimeMachineHistories[i] = TimeMachineHistories[i + 1];
+                TimeMachineHistories[WhiteboardTotalCount] = null;
+                WhiteboardTotalCount--;
+            }
 
             UpdateIndexInfoDisplay();
-
             if (WhiteboardTotalCount < 99) BtnWhiteBoardAdd.IsEnabled = true;
+            if (BoardBorderLeftPageListView?.Visibility == Visibility.Visible ||
+                BoardBorderRightPageListView?.Visibility == Visibility.Visible)
+                RefreshBlackBoardSidePageListView();
         }
 
         /// <summary>

Ink Canvas/MainWindow_cs/MW_PageListView.cs

@@ -265,5 +265,14 @@ namespace Ink_Canvas
             }
         }
 
+        /// <summary>
+        /// 预览列表中某页的“删除”按钮点击：删除该页，并阻止事件继续冒泡（避免触发选中/切页）。
+        /// </summary>
+        private void WhiteBoardPageListItem_DeleteClick(object sender, RoutedEventArgs e)
+        {
+            e.Handled = true;
+            if (sender is FrameworkElement fe && fe.DataContext is PageListViewItem item)
+                DeleteWhiteBoardPageByIndex(item.Index);
+        }
     }
 }