From 96a9f36b44c5676e7961e4024f7c47b5cf71675f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=A8=E5=BD=AD=E4=BC=9F?= <hbwhypw@163.com>
Date: Tue, 29 Oct 2019 17:26:55 +0800
Subject: [PATCH] =?UTF-8?q?1.=E8=A7=A3=E5=86=B3GetTreeNodeMaxX=E6=96=B9?=
 =?UTF-8?q?=E6=B3=95=E4=B8=AD=EF=BC=8C=E8=8A=82=E7=82=B9=E5=88=97=E8=A1=A8?=
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 =?UTF-8?q?=E8=A7=A3=E5=86=B3control=5FSizeChanged=E6=96=B9=E6=B3=95?=
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---
 .gitignore                                                   | 1 +
 .../HZH_Controls/Controls/ScrollBar/ScrollbarComponent.cs    | 5 +++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/.gitignore b/.gitignore
index 33ed5dc..e829eba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@
 /HZH_Controls/HZH_Controls/*.nupkg
 /HZH_Controls/Help
 /HZH_Controls/HZH_Controls.sln.GhostDoc.xml
+/HZH_Controls/.vs/
diff --git a/HZH_Controls/HZH_Controls/Controls/ScrollBar/ScrollbarComponent.cs b/HZH_Controls/HZH_Controls/Controls/ScrollBar/ScrollbarComponent.cs
index 7337673..1e854a0 100644
--- a/HZH_Controls/HZH_Controls/Controls/ScrollBar/ScrollbarComponent.cs
+++ b/HZH_Controls/HZH_Controls/Controls/ScrollBar/ScrollbarComponent.cs
@@ -190,7 +190,7 @@ namespace HZH_Controls.Controls
                 {
                     if (m_lstHCache.ContainsKey(control))
                     {
-                        if (m_lstHCache[control].Visible)
+                        if (m_lstHCache[control].Visible && m_lstHCache[control].Parent != null)
                         {
                             m_lstHCache[control].Parent.Controls.Remove(m_lstHCache[control]);
                         }
@@ -405,8 +405,9 @@ namespace HZH_Controls.Controls
 
         private int GetTreeNodeMaxX(TreeView tv)
         {
-            return tv.Nodes[0].Bounds.Right;
+            return tv.Nodes.Count != 0 ? tv.Nodes[0].Bounds.Right : 0;
         }
+
         void tv_AfterSelect(object sender, TreeViewEventArgs e)
         {
             TreeView tv = (TreeView)sender;
-- 
Gitee