Use Service in C#.Net

The Data Sources window displays the data sources in your project. You can use the Data Sources window to create a user interface by dragging items from the window on to forms in your project. Each item has a drop-down control list where you can select the type of control to create prior to dragging it onto a form.
http://www.dapfor.com/en/net-suite/net-grid/tutorial/data-types

Refer this url
http://msdn.microsoft.com/en-us/library/w4dd7z6t(v=vs.80).aspx