Desining user interface:

Tool box:
                  Contains all necessary controls and components used to design interface.

Controls:
                  Specially type of object that provide user the facility to intercat with the application.

Components:
                          Speciall type of object that provide user the facilty to intract with the application,
these are not visiable on the interface,but provide functionality of backend.

Label control:
                          To add text massage to the interface.