How to changed a part of URL in embeded code from youtube by Query String

If you buy any basic ASP.NET book, it will explain to you what a literal control is, and how to work with the query string. If you don't know these things, you're too much of a beginner to learn from forum replies, you should google and read detailed articles

I am sorry, but, I gave you the names of the controls and what to do. I couldn't give you more info unless I took the time to type 'asp.net literal control' in to google for you, or I wrote all the code for you. I was also being serious - too many people are posting questions here when they can't follow the answers. If you need in depth explanations, a forum reply won't do, you need to read articles. I don't think the code you have above actually compiles, it's missing information, but, he's done what I told you to do. If you needed him to do that, and could not understand what I told you, that just proves you have no clue what you're doing and should take the time to learn instead of always having to hope that someone will give you a copy and paste solution, as you don't know enough about programming to follow simple instructions. It's precisely because I want to help real programmers ( which does not mean GREAT ones, only ones trying to learn ), that I don't ever give a copy and paste solution in this forum. If you don't care enough to write your own code, then I don't see why I should write it for you.