From 226a6942dca7db4ab7cb8aa66170ab1c875c312c Mon Sep 17 00:00:00 2001
From: CJKmkp <2564608840@qq.com>
Date: Sun, 5 Apr 2026 20:21:59 +0800
Subject: [PATCH] =?UTF-8?q?improve:pdf=E6=8F=92=E5=85=A5?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 Ink Canvas/MainWindow_cs/MW_BoardControls.cs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Ink Canvas/MainWindow_cs/MW_BoardControls.cs b/Ink Canvas/MainWindow_cs/MW_BoardControls.cs
index 447cb267..e5f6f717 100644
--- a/Ink Canvas/MainWindow_cs/MW_BoardControls.cs	
+++ b/Ink Canvas/MainWindow_cs/MW_BoardControls.cs	
@@ -226,6 +226,7 @@ namespace Ink_Canvas
                 if (TimeMachineHistories[targetIndex] == null)
                 {
                     timeMachine.ClearStrokeHistory();
+                    SyncPdfPageSidebarWithCanvas();
                     return;
                 }
 
@@ -282,7 +283,11 @@ namespace Ink_Canvas
         /// </summary>
         private void ProcessElementsAfterRestore(List<UIElement> elements)
         {
-            if (elements == null || elements.Count == 0) return;
+            if (elements == null || elements.Count == 0)
+            {
+                SyncPdfPageSidebarWithCanvas();
+                return;
+            }
 
             // 使用低优先级异步处理，让 UI 先响应，图片位置和事件绑定稍后完成
             Dispatcher.BeginInvoke(DispatcherPriority.Loaded, new Action(() =>
@@ -322,6 +327,8 @@ namespace Ink_Canvas
                         BindElementEvents(pdf);
                     }
                 }
+
+                SyncPdfPageSidebarWithCanvas();
             }));
         }