Log off User in combination with RAB

Developer Tools
1

Hello,

I have a problem with a Rab application in (5.07 and 5.08).

When I open a screen (For Example “Screen Test”) from my “Main Screen”, I used timer_tick event for updating the screen every 1000Ms. When I close back from “Screen Test” to “Main Screen” there is no problem at all. But.

When I select the ABB Menu and then select “Log On” Menu, and select for example “Default User” I get an error “Null Reference” from the timer_tick event in the “second” not opened screen.

I already tried to disable the timer when I close the “second screen” (Deactivate), and enable this timer when I open the “second screen”. (Activate)

Can somebody help me with this problem?

2

Hi
Dont’ really know how your application works but it sound like you aren’t creating and disposing your timer object correctly between the screens.