From 46cac0f58c74dbfdeec195a8538919ab4ea311cd Mon Sep 17 00:00:00 2001
From: Siegfried Pammer <siegfriedpammer@gmail.com>
Date: Fri, 20 Sep 2024 23:01:43 +0200
Subject: [PATCH] Fix #3221: ArgumentOutOfRangeException: Index was out of
 range when clearing the assembly list

---
 ICSharpCode.ILSpyX/TreeView/SharpTreeNode.cs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/ICSharpCode.ILSpyX/TreeView/SharpTreeNode.cs b/ICSharpCode.ILSpyX/TreeView/SharpTreeNode.cs
index 3fd6bb662c..5f8e1cc31c 100644
--- a/ICSharpCode.ILSpyX/TreeView/SharpTreeNode.cs
+++ b/ICSharpCode.ILSpyX/TreeView/SharpTreeNode.cs
@@ -658,8 +658,9 @@ public virtual void Drop(IPlatformDragEventArgs e, int index)
 
 		public bool IsLast {
 			get {
-				return Parent == null ||
-					Parent.Children[Parent.Children.Count - 1] == this;
+				return Parent == null
+					|| Parent.Children.Count == 0
+					|| Parent.Children[^1] == this;
 			}
 		}