By Rajadurai .P
Here is the simple C# code which makes use of the concepts of Events and Interfaces together. This is a simple Windows form which contains a textbox, labels and a button.
The textbox receives the focus on page load. The keydown events of the textbox are captured and whenever any of the arrow keys is pressed, an Event is fired through an Interface which displays the name of the arrow key pressed.
Download events.cs
Here's what it looks like
