How to skip the first line from a text file

 string strLine = string.Empty;

 string strFile = @"c:\Achdemo.txt";

 ArrayList arr = new ArrayList();

 StreamReader sr = new StreamReader(strFile);

 while (sr.Peek() >= 0)

 {

   strFile = sr.ReadLine();

   arr.Add(strFile);

  }

  for (int i = 0; i < arr.Count; i++)

  {

    if (i > 0)

    {

       string s1 = arr[i].ToString();

   }

 }