C#

class Perm
{
  public void swap (ref int a, ref int b)
  {
    int temp = a;
    a = b;
    b = temp;
  } 

  public void perm (int []list, int k)
  {
    int m = list.Length - 1;
    int i;
    if (k == m)
    { 
      for (i = 0; i <= m; i++) Console.Write (list [i]);
      Console.WriteLine (" ");
    }
    else
      for (i = k; i <= m; i++)
      {
        swap (ref list [k], ref list [i]);
	perm (list, k+1);
	swap (ref list [k], ref list [i]);
      }
   }
}

class Answer
{
    Answer();

    // obviously you like it when answers are code, not explanations
    // so I answer with code ! :-D
    //

    // the Perm class looks fine for any amount of elements
    // so I guess this ends the discussion...:~ 
    Dispose()
    {
      // this class just got me
    }
}

oCmd = new OleDbCommand(sSQL, oConn);
oCmd.ExecuteNonQuery();

FillUsersList();