This article shows the menu control in ASP.NET.
Menu control
MenuItems typically defines different levels of
a hierarchy. Each MenuItem consists of properties that determine the look and
feel of the MenuItem (e.g. text, navigateURL, etc). The Menu control
conceptually contains two types of Menus:
StaticMenu:
That is always displayed on the page.
DynamicMenu:
That pops out when the user opens a parent
MenuItem.
Properties: these are the properties of menu control.

Figure 1.
For example:
drag a menu control from the toolbox on the
form.

Figure 2.
Now set the property items collection of the of menu control. such as

Figure 3.
Now click on the OK button and move on the form. Form look like this now.

Figure 4.
Now save and run the application and move the mouse up the books.

Figure 5.