DataBinding is a mechanism in WPF applications that provides a simple and easy way for applications to display and interact with the data. It allows the flow of data between UI and business model. Any modification done on data in your business model after binding is done, will automatically reflect to the UI, and vice versa.

It is process of conecting UI and Business Layer. With the help of this any changes in data will be refelected to UI or to the class which is used for bisning.