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Using arguments in a list control

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  • Using arguments in a list control

    I have a list control that uses portable SQL as the data source. This has an argument which is based on a session variable created in the onDialogInitialize event to filter the records


    My problem is that you have to run working preview or refresh the page twice before the correctly filtered results are returned. (If I remove the filter the list renders as you would expect but, of course, all the records are returned)

    Any insights that would help me understand why this is happening and how I can solve or workaround the problem would be much appreciated

    Many thanks

  • #2
    Re: Using arguments in a list control

    I use the on change event and it works perfectly. Try writing the session variable to a hidden field and using the on change event. I always use server side filtering


    • #3
      Re: Using arguments in a list control

      Hi Michael. Many thanks. Please would you mind providing a few more details? Do you mean the "OnControlChange" event? What Javascript do you use? All the best. Julian


      • #4
        Re: Using arguments in a list control

        Julian, I believe this may be just a timing issue during testing. You're probably setting the session variable close to the same time your list is being rendered... it's just that your session var isn't there yet. Since you mention working preview this makes sense because you're testing your component. In real use, your session var will most likely be set prior to the List rendering. If you session var will be changing, you'll need to perform a refreshdata on the list.

        You need to run the page twice because the 2nd time the page is run your session var is now established... because of the 1st run.


        • #5
          Re: Using arguments in a list control

          Hi Julian

          I am busy but will try to send info on Monday morning.

          Set the value of a field (Session) to the session variables value. As David mentions make sure the session variable is available. Then use the onChange event. This is a field event like click double click.

          I will explain this clearly early Monday.



          • #6
            Re: Using arguments in a list control

            On reading David's reply I think you can simply refresh the list using the client side event "onInitializeComplete" . Run a server side list refresh.

            I can be found on 01323 895337 until 13:00 in case you have problems


            • #7
              Re: Using arguments in a list control

              Hi Michael and David
              Many thanks for taking the trouble to respond to this which I really appreciate
              I've tried:
              - Putting the into a textbox and a server-side filter list in the onChange event
              - Trying to refresh the list using {dialog.object}._refreshListData('list1') in the onInitializeComplete event
              Sadly, neither of these have worked so I'm clearly doing something wrong but I don't know what
              Would either of you know if there's a way of ensuring the onDialogInitialise event has completed before the rendering of the List control starts?
              Once again, many thanks


              • #8
                Re: Using arguments in a list control

                I put an alert message alert("complete"); in onInitilializeComplete

                The list has rendered.

                Try this method



                I am travelling will be available Monday if you want to Skype and share screens


                • #9
                  Re: Using arguments in a list control

                  Hi Michael
                  Many thanks for your kind offer but I've found that the easiest way to get the results I'm looking for is to populate the List control using a 'Custom' data source
                  All the best