Webpage communicating with /triggering event on C# program?

I'm planning on creating a C# program (an IRC bot, to be specific). I need it to be able to receive requests from and/or be controlled by a web pag开发者_开发技巧e. I plan on getting a VPS, that I will host my website and this bot on.

For example, suppose I have a button on an ajax page. If a user clicks that button, could it trigger a c# event using php, and perhaps carry some arguments (like text in a form on that same page)?

I am new to this field of programming and may not use some correct terminology, and feel free to correct me.

Sounds like you want to be using TcpClient. System.Net.Sockets.TcpClient

Boom baby! IRC bot code is he'ya:
IRC Bot code

And while there are a hundred ways to sunday to make a program that responds to http requests, go do a tutorial on Asp.Net. Whether it's taking a command through a web page or showing an interface, this will be a nice step into an easy new technology for you:

http://www.asp.net/mvc

In particular, go through the free PluralSight training on that web page. You will not regret it.