Read last line of a text file

Anyone have any idea how to make a StreamReader read the last line of a text file without knowing what it is. For example if I have a text file like this:

Code:

---

1
2
3
4
5
6
7

---

how can I make my program read the last line which is "7" but with out me telling the program that it is seven? Any help is appreciated thanks :)

Maybe something like this:

int index = 1;
stream.Seek(0, SeekOrigin.End)
while(stream.ReadByte () != '\n')
{
stream.Seek(index, SeekOrigin.End)
++index
}

try this:

Code:

---

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace streamreader
{
    class Program
    {
        static void Main(string[] args)
        {
            StreamReader st = new StreamReader("test.txt");
            string str = st.ReadToEnd();
            int x = str.LastIndexOf('\n');
            string lastline = str.Substring(x+1);
            Console.WriteLine(lastline);
            Console.ReadLine();
        }
    }
}

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Touraj Ebrahimi [toraj_e] [at] [yahoo] [dot] [com]