private void button1_Click(object sender, EventArgs e)
{
string username = txtTaiKhoan.Text;
string password = txtMatKhauMoi.Text;
LoginDB db = new LoginDB();
try
{
if (db.ChangePassword(username, password))
{
MessageBox.Show("Thay doi thanh cong");
}
}catch (Exception ex)
{
MessageBox.Show("Thay doi mat khau that bai");
}
}
