private void cboStartAccName_SelectedIndexChanged(object sender, EventArgs e)
{
if (cboStartAccName.SelectedValue != null)
{
FillControl.FillEndPeriodList(cboEndAccName, cboStartAccName.SelectedValue.ToString());
}
else
{
cboEndAccName.DataSource = null;
}
cboEndAccName.DroppedDown = true;
}