private void btnExit_Click(object sender, EventArgs e)
{
Menucs menu = new Menucs();
menu.Show();
menu.FormClosed += new FormClosedEventHandler(menu_FormClosed);
this.Hide();
}
private void button1_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(@"Data Source=DESKTOP-4NNB39U\SQLEXPRESS;Initial Catalog=BanHang;Integrated Security=True");
String query = "Select * from tbl_Login where username ='******'and userpassword ='******'";
SqlDataAdapter sda = new SqlDataAdapter(query, con); //show du lieu ra
DataTable dt = new DataTable(); //mot vung show du lieu
sda.Fill(dt); //data adapter vao datatable
if (dt.Rows.Count == 1)
{
Menucs main = new Menucs();
main.Show();
this.Hide();
}
else
{
MessageBox.Show("Kiem tra lai tai khoan hoac mat khau");
}
}