private void btn_dangnhap_Click(object sender, EventArgs e)
{
SqlCommand cm = new SqlCommand();
cm.Connection = conn;
cm.CommandType = CommandType.Text;
cm.CommandText = @"select * from NguoiDung where username=@ten and pass=@password";
cm.Parameters.Add("@ten", SqlDbType.NVarChar, 50).Value = txt_user.Text;
cm.Parameters.Add("@password", SqlDbType.NVarChar, 50).Value = txt_pass.Text;
da.SelectCommand = cm;
da.Fill(dt);
if (dt.Rows.Count > 0)
{
frm_trangchu fr = new frm_trangchu();
fr.EnableMenu();
fr.Show();
Hide();
}
else
{
MessageBox.Show("Đăng nhập thất bại", "thông báo");
}
}
private void btn_thoat_Click(object sender, EventArgs e)
{
frm_trangchu fr = new frm_trangchu();
fr.Show();
Hide();
}