C# control extention for invoke methods

ControlExtentions.cs

 public static class ControlExtentions
    {
        public static void InvokeIfNeeded(this Control control, Action doit)
        {
            if (control.InvokeRequired)
                control.Invoke(doit);
            else
                doit();
        }
       
        public static void InvokeIfNeeded<T>(this Control control, Action<T> doit, T arg)
        {
            if (control.InvokeRequired)
                control.Invoke(doit, arg);
            else
                doit(arg);
        }
      
    }
    
    /*
      example of usage:
      textBox1.InvokeIfNeeded(() => textBox1.Text = "bla");
    */