diff --git a/Bin/net40/SunnyUI.dll b/Bin/net40/SunnyUI.dll
index d7e326dd..7e637a1d 100644
Binary files a/Bin/net40/SunnyUI.dll and b/Bin/net40/SunnyUI.dll differ
diff --git a/SunnyUI/Controls/UIComboTreeView.cs b/SunnyUI/Controls/UIComboTreeView.cs
index 892c75e5..4eed29fe 100644
--- a/SunnyUI/Controls/UIComboTreeView.cs
+++ b/SunnyUI/Controls/UIComboTreeView.cs
@@ -175,7 +175,7 @@ namespace Sunny.UI
         private void UIComboTreeView_ButtonClick(object sender, EventArgs e)
         {
             ItemForm.Size = ItemSize;
-            item.TreeView.ExpandAll();
+            //item.TreeView.ExpandAll();
             item.CanSelectRootNode = CanSelectRootNode;
             item.Translate();
             item.SetDPIScale();