Filtering RadGrid with keyboard

This project shows how you could make your RadGrid filter its data by pressing [Tab] and [Enter] keys from the keyboard, without clicking with your mouse. The steps you need to perform in order to filter this grid, are: type text into the filtering TextBox; then click [Tab] to focus the column filtering icon and [Enter] to open the filtering menu. You should click [Tab] once more to focus an item from the menu. Now navigate with the keyboard arrows to mark desired filter function and click [Enter]. Your grid appears filtered.