using System;
using System.Text.RegularExpressions;
 
namespace RegExApplication
{
   public class Program
   {
      public static void Main(string[] args)
      {
      	string abc = "Nursing_Desk";
         string input = "C:\\Nova6\\Nursing_Desk\bin\\Debug";
         string pattern = "^(.*?)(?=\\\\" + abc + ")";
         Console.WriteLine(pattern);
         Regex rgx = new Regex(pattern);
 
         Match match = rgx.Match(input);
 
        	if (match.Success)
        	{
            	Console.WriteLine(match.Groups[1].Value);
        	}
      }
   }
}

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