Merge pull request bonsai-rx#1760 from glopesdev/issue-1759

Prevent empty category nodes from being dragged into the workflow
PathogenDavid · Apr 27, 2024 · d3317bb · d3317bb
2 parents d829231 + a10d27f
commit d3317bb
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/Bonsai.Editor/EditorForm.cs b/Bonsai.Editor/EditorForm.cs
@@ -1541,7 +1541,9 @@ protected override void OnDeactivate(EventArgs e)
 
         private void toolboxTreeView_ItemDrag(object sender, ItemDragEventArgs e)
         {
-            if (e.Item is TreeNode selectedNode && selectedNode.GetNodeCount(false) == 0)
+            if (e.Item is TreeNode selectedNode &&
+                selectedNode.Tag is not null &&
+                selectedNode.GetNodeCount(false) == 0)
             {
                 toolboxTreeView.DoDragDrop(selectedNode, DragDropEffects.Copy);
             }