gistfile1.cs

string text = "source text";

Match match = null;
List<Func<bool>> funcs = new List<Func<bool>>() {
	() => { match = Regex.Match(text, "pattern1"); return match.Success; },
	() => { match = Regex.Match(text, "pattern2"); return match.Success; },
	() => { match = Regex.Match(text, "pattern3"); return match.Success; },
	() => { match = Regex.Match(text, "pattern4"); return match.Success; },
	() => { match = null; return true; }
};
funcs.TakeWhile(f => !f()).ToList();
if (match == null) throw new Exception("no match");