private void Button3_Click(object sender, EventArgs e)
{
1.  int iPos;
2.  int iCount;
3.  iPos = this.BindingContext[ds, "stTable"].Position + 1;
4.  iCount = this.BindingContext[ds, "stTable"].Count;
5.  if (iPos < iCount)
    {
6.    this.BindingContext[ds, "stTable"].Position += 1;
7.    textRecord.Text = Convert.ToString(this.BindingContext[ds, "stTable"].Position + 1);
    }
}
