1.Regex comments1 = new Regex(@"//.*?\n");
2. Regex comments2 = new Regex(@"/\*(.|\n)*?\*/");
3.
4. string readText = File.ReadAllText(@"D:\PDFHelper.cs");
5. string afterRemoval = comments1.Replace(readText, "");
6. afterRemoval = comments2.Replace(afterRemoval, "");
