title: If Button1 was clicked at any point in time prior to Button2 being clicked, prompt message
body: <p>I need to prompt a message if a user clicked button1 and then clicked button2 at some point later on.</p>
  
  <p>Code will look something like:</p>
  
  <pre><code>Private Sub button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button2.Click
  
     if button1.clicked then 
  
        messagebox.show("Are you sure you want to click button2 after clicking button1?" , "Warning", MessageBoxButtons.OKCancel)
  
           if messagebox.userselected.ok then   
  
               Me.Dispose()
               Me.Close()
  
           else
               'do nothing
           end if
  
     end if
  
  End Sub
  </code></pre>