MenuStrip Items Collection Editor
The MenuStrip Items Collection Editor allows you to add, remove, and reordercontrols of a and view and set MenuStrip and ToolStripItem properties.
Display the MenuStrip Items Collection Editor by:
Right-clicking a MenuStrip control in the designer and choosing Edit Items from the shortcut menu.
Clicking the smart tag on a MenuStrip control in the designer and choosing Edit Items from the MenuStrip Tasks dialog box.
Click to add the ToolStripItem that is displayed in the drop-down list. You can add one or more of the following controls:
Displays the MenuStrip and the members that it contains.
Displays the properties of the MenuStrip or a selected member for editing.
Click the X button to remove the selected ToolStripItem. You cannot use this button to remove the MenuStrip itself.
Click the UP and DOWN arrows to move the selected ToolStripItem up or down in the Members list. Changes of order are reflected on the Windows Form in the designer.