Reverse_A_String

using System;
using System.Linq;

namespace DictionaryTest
{
    class Program
    {
        static void Main()
        {
            string str = "abc_def_ghj";
            char delimiter = '_';
            string temp = "";
            string result = "";

            if (str.IndexOf(delimiter) == -1)
            {
                return;
            }

            for (int i = str.Length - 1; i >= 0; i--)
            {
                if (str[i] != delimiter)
                {
                    temp += str[i];
                }
                else
                {
                    string span = new string(temp.Reverse().ToArray());
                    span += delimiter;
                    result += span;
                    temp = "";
                }

                // If loop is over but temp still contains characters
                if(i == 0 && temp.Length > 0)
                {
                    string span = new string(temp.Reverse().ToArray());
                    result += span;
                }
            }

            Console.WriteLine(result);
            Console.ReadLine();
        }
    }
}