private void button1_Click(object sender, EventArgs e)
{
p = DatabaseLinker.Login(textBox1.Text, textBox2.Text);
if (null == p) MessageBox.Show("Wrong password!");
else if (p is Administrator) goNextForm();
else if (p is User) goNextForm();
else MessageBox.Show("Wrong password!");
}
public FormIndex(Person p)
{
person = p;
InitializeComponent();
}