Wurm Status Server | Sophorino | Thread related

Thread t;

private void button1_Click(object sender, EventArgs e) {
    button1.Enabled = false;
    //

    t = new Thread(new ThreadStart(_testlog));
    t.IsBackground = true;
    t.Start();

    //

    button2.Enabled = true;
}

private void button2_Click(object sender, EventArgs e) {
    button2.Enabled = false;

    //

    if (t.IsAlive) {
        t.Abort();
    }

    //

    button1.Enabled = true;
}

public void _log(RichTextBox richTextBox, String msg) {
    if (richTextBox.InvokeRequired) {
        richTextBox.BeginInvoke(new Action(delegate {
            _log(richTextBox, msg);
        }));
        return;
    }

    richTextBox1.AppendText(msg + "\n");
}

public void _testlog() {
    while (true) {
        _log(richTextBox1, "Test");
        Thread.Sleep(5000);
    }
}