Help needed for 'cross-thread operation error' in C#

Question

In the following code MessageReceived is on a different thread to label1 and when trying to access it I will get this error:

Answer 1

You need to use Control.Invoke (or Control.BeginInvoke). First, create a new Windows Forms application and add a label and a button. Double click on the button in Visual Studio to edit it's Click event and add the following code:

    private void button1_Click(object sender, EventArgs e)
    {
        new System.Threading.Thread(new System.Threading.ThreadStart(Run)).Start();
    }

    void Run()
    {
        label1.Invoke(new Action(delegate()
        {
            label1.Text = System.Threading.Thread.CurrentThread.Name + " " + System.DateTime.Now.ToString();
        }));
    }