ToolStripMenuItem usage

ToolStripMenuItem can be reused across different context menus, toolbars, or menus in your application.

Important Considerations:

1. State Synchronization: If the ToolStripMenuItem has state-dependent properties (like Checked or Enabled), changes in one menu will be reflected in all instances where that item is used.
2. Parent-Child Relationship: A ToolStripMenuItem can only have one parent. When you add it to a new menu, it is removed from its previous parent.

So, if you want to reused a ToolStripMenuItem, it better to add it in the contextMenuStrip.Opening.