I ran the programme but when I click on the window nothing happens, and nothing appears what have I done wrong?
I need a little more information. Does the table view appear? Does the button? When you click the button nothing happens? What if you click on the button and then where the first row would be? Is there anything on the console? What if you put an NSLog statement in the method triggered by the button? In the debugger, is the pointer to the table view non-nil?