再次请教VS2005随机数产生的问题。

private void timer1_Tick(object sender, EventArgs e)
{
Random r = new Random();
textBox1.Text = r.Next(50, 60).ToString();
textBox2.Text = r.Next(50, 60).ToString();
textBox3.Text = r.Next(50, 60).ToString();
}
public Form1()
{
InitializeComponent();
Timer timer = new Timer();
timer.Enabled = true;
timer.Interval = 1000;
timer.Tick += new System.EventHandler(this.timer1_Tick);
}