From e041f73223280e796aa7febed61cd67da8ea9211 Mon Sep 17 00:00:00 2001
From: NaBian <836904362@qq.com>
Date: Tue, 3 Dec 2019 23:34:20 +0800
Subject: [PATCH] fixed #249

---
 .../HandyControl_Shared/Controls/TabControl/TabItem.cs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/Shared/HandyControl_Shared/Controls/TabControl/TabItem.cs b/src/Shared/HandyControl_Shared/Controls/TabControl/TabItem.cs
index f0430347..becf01e0 100644
--- a/src/Shared/HandyControl_Shared/Controls/TabControl/TabItem.cs
+++ b/src/Shared/HandyControl_Shared/Controls/TabControl/TabItem.cs
@@ -102,7 +102,15 @@ namespace HandyControl.Controls
         /// </summary>
         internal TabPanel TabPanel
         {
-            get => _tabPanel ??= TabControlParent.HeaderPanel;
+            get
+            {
+                if (_tabPanel == null && TabControlParent != null)
+                {
+                    _tabPanel = TabControlParent.HeaderPanel;
+                }
+
+                return _tabPanel;
+            }
             set => _tabPanel = value;
         }