private void Form1_Load(object sender, EventArgs e)
{
try
{
Helper h = new Helper();
SqlConnection con = h.GetConnect();
con.Open();
con.Close();
}
catch (Exception)
{
frmConnection f = new frmConnection();
f.ShowDialog();
}
txtDangNhap.Focus();
txt.Hide();
}
private void button_cauhinhdangnhap(object sender, EventArgs e)
{
frmConnection ct = new frmConnection();
ct.Show();
}