Problem between event and displaying data in a form.

Hi,

I want to cath an event thrown by the class "Class1" in the class "Form1" to display data in the textbox1. Even though the code pass by the eventhandler, as a messageBox pop-up, can someone tell me why I can't see the text "connected!", in the textbox1?

Thanks.

namespace WindowsFormsApplication1
{
    static class Program
    {
        ///

        /// The main entry point for the application.
        ///

        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}

namespace WindowsFormsApplication1
{
    class Class1
    {
        public delegate void Connected_EventHandler();
        public static event Connected_EventHandler OnConnected;
        
        public void connect()
        {
            Form1 f = new Form1();
            
            OnConnected += new Connected_EventHandler(f.onConnectedEventHandler);
            DoSomething();
            
        }
        private void DoSomething()
        {
            if (OnConnected != null)
            {
                OnConnected();
            }
        }
    }
}

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        Class1 cl = new Class1();

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            cl.connect();
            // textBox1.Text = "connected!";    If I uncomment this line, the textbox display the text
        }

        public void onConnectedEventHandler()
        {
            //MessageBox.Show("HELLO");         If I uncomment this line, the message pop-up
            textBox1.Text = "connected!";       // The textbox doesn't display the data!
        }
    }
}