private void button1_Click(object sender, EventArgs e)
{
frmMainAdmin fMA = new frmMainAdmin();
frmMainNhanVien fMNV = new frmMainNhanVien();
string loaiTaiKhoan = tKDNBul.KiemTraDangNhap(txtTenDangNhap.Text, txtMatKhau.Text);
txtMatKhau.Text = "";
if (loaiTaiKhoan == "Admin")
{
this.Hide();
fMA.ShowDialog();
this.Show();
}
else
if (loaiTaiKhoan == "User")
{
this.Hide();
fMNV.ShowDialog();
this.Show();
}
else
{
MessageBox.Show("Sai Ten Dang Nhap hoac mat Khau");
}
}