c#+Sidebar+Drop Down Menu Location

[Lakshay]

Hi All,
i am developing a sidebar application in c#.i have a button on which if here is a right click event occurs a drop down menu appears.but this drop down menu is appearing outside the sidebar inspite of the fact that i am assigning it the location where mouse is being clicked.
Please tell me the way out to solvethis problem.i want the menu to appear on the point where mouse button is clicked.

Thanx in advance..........

Below is my code....

private void titleButton_MouseClick(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Right)
            {
 
                mainMenuStrip.Show(titleButton,e.Location);
 
 
            }
        }