How to get a random value using the RANDOM class in C#

const int MAXVAL = 45;
  const int MAXELEMENTS = 80;
  static string stringHash = "##################################################################";
  int[] intdata = new int[MAXELEMENTS];

  private void Button_Click(object sender, EventArgs e)
  {
    int i;
    string strbuffer;
    Random rd = new Random(5); 
    lstViewResult.Items.Clear();
    for (i = 0; i < data.Length; i++)
    {
      intdata[i] = rd.Next(MAXVAL); 
      strbuffer = intdata[i].ToString() + " " + stringHash.Substring(0, intdata[i]);
      lstViewResult.Items.Add(strbuffer); 
    }
  }