Creating a HTML5 video player control ,asp.net c#

This tutorial will introduce you to the process of ASP.NET server control development. You’ll also see how creating your own controls can simultaneously improve the quality of your Web applications, make you more productive and improve your user interfaces.

ASP.NET custom controls are more flexible than user controls. We can create a custom control that inherits from another server-side control and then extend that control. We can also share a custom control among projects. Typically, we will create our custom control in a web custom control library that is compiled separately from our web application. As a result, we can add that library to any project in order to use our custom control in that project.

http://net.tutsplus.com/tutorials/create-asp-net-server-controls-from-scratch/