ToolStrip is a container for ToolStripItem elements. Each individual element on the ToolStrip is a ToolStripItem that manages the layout and event model for the type it contains. . The ToolStrip controls provide a common interface for Menus and Strips in Windows Forms.
Drag and drop ToolStrip Control from toolbox on the window Form.
Add ToolStrip Item which you want to show.
You need to add one of the items in your ToolStrip that derives from ToolStrip Item.
Here SplitButton is added.
Add text which you want to display.
Run the project
When you click SplitButton in ToolStrip then menu will show.