private void button1_Click(object sender, EventArgs e)
{
BanHang b = new BanHang();
this.Hide();
b.ShowDialog();
this.Show();
}
private void button2_Click(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection(@"Data Source=LAPTOP-4NRRL3NS\MSSQLSERVER01;Initial Catalog=demo;Integrated Security=True");
conn.Open();
string tk = textBox1.Text;
string mk = textBox2.Text;
string sql = "select *from TAIKHOAN where TENDANGNHAP= '" + tk + "' and MATKHAU= '" + mk + "'";
SqlCommand cmd = new SqlCommand(sql, conn);
SqlDataReader dta = cmd.ExecuteReader();
if (dta.Read() == true)
{
//Chon v = new Chon();
//this.Hide();
//v.ShowDialog();
//this.Show();
if (textBox1.Text == "ho")
{
BanHang n = new BanHang();
this.Hide();
n.ShowDialog();
this.Show();
}
else
{
Main m = new Main();
this.Hide();
m.ShowDialog();
this.Show();
}
}
else
{
MessageBox.Show("Đăng nhập thất bại ", "Thông báo", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
