private void btnFindHKID_Click(object sender, EventArgs e)
{
FindHKID findHKID = new FindHKID();
findHKID.Closed += new EventHandler(findHKID_Closed);
findHKID.ShowDialog();
}
void findHKID_Closed(object sender, EventArgs e)
{
FindHKID findHKID = sender as FindHKID;
if (findHKID.IsCompleted)
{
txtSmartTag7.Text = findHKID.HKID;
}
}