protected void button1_Click (object sender, System.EventArgs e) { Screen sc = Screen.PrimaryScreen; listBox1.Items.Add("Screen count: " + Screen.AllScreens.Length.ToString()); listBox1.Items.Add("Bounds: " + sc.Bounds.ToString()); listBox1.Items.Add("WorkingArea: " + sc.WorkingArea.ToString()); listBox1.Items.Add("DeviceName: " + sc.DeviceName); }