How to get return value when BeginInvoke/Invoke is called in C#

Question

I\'ve this little method which is supposed to be thread safe. Everything works till i want it to have return value instead of void. How do i get the return value when BeginI

Answer 1

delegate string StringInvoker();
    string GetControlText()
    {
        if (control.InvokeRequired)
        {
            string controltext = (string)control.Invoke(new StringInvoker(GetControlText));
            return(controltext);
        }
        else
        {
            return(control.Text);
        }
    }

//simple & elegant but it is needed to wait for another thread to execute delegate; however if you cannot proceed without the results...