What is the purpose and usage of data binding in WPF?

Data binding in WPF is a powerful feature that allows for a seamless connection between the user interface and the data being displayed. Its purpose is to automatically synchronize data between the UI elements and the data source, ensuring that any changes made to one are reflected in the other.

By using data binding, developers can create dynamic and responsive applications that update in real-time as the underlying data changes. This simplifies the process of managing and updating the UI, as well as enables a separation of concerns between the presentation and the data logic.

Overall, data binding in WPF enhances the user experience by providing a more interactive and connected application, making it a key aspect of developing modern and efficient Windows applications.