To access the buttons in the
RadToolBarDropDown or RadToolBarSplitButton, use the Buttons collections of these objects as shown below:
Code:
RadToolBarSplitButton splitButton = (RadToolBarSplitButton)RadToolBar2.FindItemByText("splitButtonText"); // I'm having splitbutton with Text 'splitButtonText'
splitButton.Buttons[1].Visible = false; // Second item in Buttons collection