Question: I am developing an App where I would need to perform HTTP Request using C#.
Had in been PHP, I could use the HttpRequest class. Which class or group of class is best matched for the PHP HttpRequest by which I could make GET and POST Request.

Answer: 
See [QScintilla](http://www.riverbankcomputing.co.uk/software/qscintilla/intro). It has Javascript highlighting and (auto-)completion support built-in.
Try [stealing the official one](http://svn://labs.trolltech.com/svn/qtscript/qtscriptdebug), you want src/editor/scripthighlighter.h and src/editor/scripthighlighter.cpp