invoke delegate with parameters

Download Ping Example Code (10kb)

The following is a simple code to invoke a delegate with parameter. I created this to update label control on the form asynchronously. I did not quite work I was hoping for but the code does pass parameter to the delegate

private void Ping_Click(object sender, EventArgs e)
{
    BeginInvoke(new InvokeDelegate(UpdateLabelAsych),"test");

    Ping ping = new Ping();
    PingReply pingresult = ping.Send(txtIpAddress.Text);
    if (pingresult.Status.ToString() == "Success")
    {
        //Response.Redirect("http://xxx.xxx.xxx.xx/sample");
        BeginInvoke(new InvokeDelegate(UpdateLabelAsych), "Success");
    }
    else
        BeginInvoke(new InvokeDelegate(UpdateLabelAsych), "Failure");
}

private void UpdateLabelAsych(string msg)
{
    label1.Text = msg;
}

private delegate void InvokeDelegate(string s);