F # winforms MenuStrip issue: not sure how to get the DropDownItems handle

I recently started learning F # and this is the first time I have ever used WinForms. Here is my code.

#light
open System
open System.Windows.Forms
let form =
    let temp = new Form()
    let ms = new MenuStrip()
    let file = new ToolStripDropDownButton("File")
    ignore(ms.Items.Add(file))
    ignore(file.DropDownItems.Add("TestItem")) \\Code of importance
    let things _ _ = ignore(MessageBox.Show("Hai"))
    let handle = new EventHandler(things)
    ignore(file.Click.AddHandler(handle))
    let stuff _ _ = ignore(MessageBox.Show("Hai thar."))
    let handler = new EventHandler(stuff)
    let myButton = new Button(Text = "My button :>", Left = 8, Top = 100, Width = 80)
    myButton.Click.AddHandler(handler)
    let dc c = (c :> Control)
    temp.Controls.AddRange([| dc myButton; dc ms |]);
    temp
do Application.Run(form)

      

        
        
        
      

    

What is the problem, I cannot figure out how to get the handle to the DropDownItems so that I can use it. I'm sure this is something simple, but I haven't used F # for a long time. Thanks for any help.

edit: I would also like to point out that I know there is a lot of ugly syntax in this block of code, but this is all just a test form that I used.