The ToolBar.Buttons property is a zero-based indexed collection used to hold all the System.Windows.Forms.ToolBarButton controls assigned to the toolbar. Because the property is read-only, it can not be assigned a collection of toolbar buttons directly. Toolbar buttons can be added or removed by using the methods inherited from the System.Windows.Forms.ToolBar.ToolBarButtonCollection class. Use the System.Windows.Forms.ToolBar.ToolBarButtonCollection.Add(ToolBarButton) method to add individual buttons and the System.Windows.Forms.ToolBar.ToolBarButtonCollection.Remove(ToolBarButton) method to delete a button. Call the System.Windows.Forms.ToolBar.ToolBarButtonCollection.Clear method to remove all the buttons from the collection.