It's json. You shouldn't be using regular expressions to parse json documents. There's plenty of libraries out there, often built in to the language to do this. I'm not too well versed on .NET, but using regex to parse a json document is a fairly unintuitive approach (the only argument I'd be willing to concede on is if you have to include a 3rd party library, in which case the performance loss may outweigh the gains if it's for a simple, one-off action).