Right click context menu contains blank lines

Hi,

The original Microsoft Answers / Q&A link you mentioned is gone because that content was retired during Microsoft’s migration. It wasn’t fully archived, so we can’t recover the exact original discussion.

For your particular problem (showing blank lines in ContextMenu), the cause could be:

• Menu rebuild inside the Popup event: clearing and adding items while Windows is laying out the native menu leaves empty slots.
• Items created (or temporarily “hidden”) with empty or null Text, never restored.
• “Hiding” instead of removing: leaving a MenuItem in the collection but trying to blank it out rather than calling Remove / Clear.
• Owner‑draw handlers (MeasureItem, DrawItem) throwing or returning zero size—background paints, text doesn’t.
• Cross‑thread updates to MenuItem.Text (no Invoke), so the paint sees an unset value.
• Reusing the same MenuItem instance across different parents or re‑parenting right before display.

Below are relevant official and community documents regarding practices on ContextMenu:

Similar issue

• I've found this somewhat similar thread, take a look to see if it helps Trouble With ContextMenu, not displaying items

Modern (Recommended) API

• How to Add Items to a ContextMenuStrip Basic usage of ContextMenuStrip and ToolStripMenuItem.
• Handle the ContextMenuStrip Opening Event Proper place for lightweight dynamic state (enable/disable, visibility) without risky structural rebuilds.

Compatibility / Migration

• MenuItem / ContextMenu Compatibility Note (WPF & WinForms) Explains naming collisions and migration considerations when projects mix WPF and WinForms.

If this doesn’t help, please share snippets of these code so I can pin point the problem:

• Your current Popup (or Opening) event handler.
• The method (if any) that builds or rebuilds the menu.
• Any owner‑draw handlers.
• Any background/threaded code that touches MenuItem.Text, MenuItems.Add, or removal.

Happy to help further if there's any new information.