private void button1_Click(object sender, EventArgs e)
{
presenter = new MainPresenter(textBox1.Text, textBox2.Text);
var con = presenter.ButtonConnection();
label1.Text = con.Item1;
label3.Text = presenter.ReturnDatabases();
label3.Visible = con.Item2;
label5.Text = presenter.ReturnUserName();
label5.Visible = con.Item3;
Refresh();
}