using System;

using System.Text.RegularExpressions;

​

//Created by: M. Hassan

//Last Update: Aug, 4, 2016

//Regular expression to Parse string including double quote and left - right parensiss

public class Program

{

    public static void Main()

    {

          var c = new RegParser();

           var text = @"Replace(FileName, "".txt"", "".doc"")";

​

        //  Console.WriteLine(text);

          c.Parse(text);         

          Console.WriteLine("FileNmae: {0}", c.FileNmae);

          Console.WriteLine("Doc:  {0}", c.Doc);

          Console.WriteLine("Txt:    {0}", c.Txt);       

    }

}

​

​

    class RegParser

    {

        public string FileNmae { get; set; }

        public string Doc { get; set; }

        public string Txt { get; set; }      

​

        private static string pattern = @"

        Replace

        \(

        (?<filename>\w+)

        \,\s*

        \u0022                # double quote

        \.

        (?<txt>\w+)

        \u0022

        ,\s*

        \u0022

        \.

        (?<doc>\w+)

";          

​

        private Regex regex = new Regex(pattern,

               RegexOptions.Singleline

               | RegexOptions.ExplicitCapture

               | RegexOptions.CultureInvariant

               | RegexOptions.IgnorePatternWhitespace

               | RegexOptions.Compiled

               );

​

​

​

        public void Parse(string text)

        {

            Console.WriteLine("text: {0}",text);

            Match m = regex.Match(text);

            FileNmae = m.Groups["filename"].ToString();

             Doc = m.Groups["doc"].ToString();

            Txt = m.Groups["txt"].ToString();       

        }

​

    }

​

​