C# has all the features of any powerful, modern language. In C#, the most rapid and convenient way to create your user interface is to do so visually, using the Windows Forms Designer and Toolbox. Windows Forms controls are reusable components that encapsulate user interface functionality and are used in client side Windows based applications.
A control is a component on a form used to display information or accept user input. The Control class provides the base functionality for all controls that are displayed on a Form. From the following chapters you can see how to use these Windows Forms Controls in your C# applications.