private void dtk_btn_Click(object sender, EventArgs e)
{
this.Hide();
irdtkInput i = new irdtkInput();
i.Show();
}
private void dangkyBtn_Click(object sender, EventArgs e)
{
try
{
DANGKYTHICCQT_KHAC();
}
catch
{
MessageBox.Show("Lỗi nhập liệu");
irdtkInput i = new irdtkInput();
i.Show();
this.Hide();
return;
}
PHIEUDUTHI p = new PHIEUDUTHI();
p.Show();
this.Hide();
}