Compiler compiler in C#

Question

I\'m looking for a customizable parser and/or lexer that can allow me to build a custom syntax checker in C#. Essentially the user will enter code a line of code (custom), and t

Answer 1

From here:

LINQPad uses a number of third-party components within the UI. The query editor uses Actipro's SyntaxEditor control (a very polished product); the "IntelliSense" features rely on a combination of libraries from Actipro Software and ICSharpCode (from the SharpDevelop project).

I've not used any of the products mentioned in that excerpt (apart from LINQPad - which I highly recommend!) but thought it might start moving you in the right direction perhaps.