?
Solved

sort unbound multi-column listbox without ORDER BY

Posted on 2008-10-21
7
Medium Priority
?
584 Views
Last Modified: 2013-11-29
I have a multicolumn listbox with 7 columns.  The listbox is a VALUE LIST, therefore not bound to a query.  I would like to have a button, say for example, to sort ascending by the 2nd column, hit it again and it'll sort descending.

Is there a way to do this in Access, perhaps in memory opposed to filling a temporary table, sorting, then repopulating the listbox?

Thanks,
NC
0
Comment
Question by:NO_CARRIER
  • 4
  • 3
7 Comments
 
LVL 66

Expert Comment

by:Jim Horn
ID: 22766558
No recordset = No sorting.  Sorry dude.
Just slam all your values in a table, then create a query that reads them.

If all this is is a simple list of user-selectable choices, memory is insignificant.
0
 
LVL 1

Author Comment

by:NO_CARRIER
ID: 22766595
Will the temporary tables be stored in the front-end by default, and cleaned up with compact on exit?.. or will I need to keep an eye on the back-end database to compact it regularly?
0
 
LVL 66

Expert Comment

by:Jim Horn
ID: 22766610
>Will the temporary tables be stored in the front-end by default
All depends on your preference.  If you want immediate control over it because of updates, put it in the back-end.
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 
LVL 1

Author Comment

by:NO_CARRIER
ID: 22766649
I found the following solution, which works with only a single column listbox... but having a tough time modifying it for a multicolumn listbox...

Private Sub cmdSort_Click()
    Dim FinishedSwapping As Boolean
    Dim UpperBound As Long
    Dim Temp As String
    Dim strValue() As String
    Dim i As Long
   
    'Add each value in the list to a temporary array (for sorting)
    For i = 0 To lstBox.ListCount - 1
        ReDim Preserve strValue(i)
        strValue(i) = lstBox.ItemData(i)
    Next i

    UpperBound = UBound(strValue())

    'Sort array into ascending order
    Do
        FinishedSwapping = True
        For i = 0 To UpperBound - 1
            'If they are bigger then perform a swap
            If strValue(i) > strValue(i + 1) Then
                Temp = strValue(i + 1)
                strValue(i + 1) = strValue(i)
                strValue(i) = Temp
                FinishedSwapping = False
            End If
        Next i
    Loop While Not (FinishedSwapping)

    'Clear list
    lstBox.RowSource = ""
    lstBox.Requery
   
    'Add sorted items into list
    For i = 0 To UpperBound
        lstBox.AddItem strValue(i)
    Next i
End Sub
0
 
LVL 1

Author Comment

by:NO_CARRIER
ID: 22766664
> All depends on your preference.  If you want immediate control over it because of updates, put it in the back-end.

I'm not worried about updates.  So I would build the table in the FE then I suppose.  I'll experiment with this too...
0
 
LVL 66

Accepted Solution

by:
Jim Horn earned 600 total points
ID: 22766684
>I found the following solution, which works with only a single column listbox
In my opinion, this is more work than is necessary.  Just throw them in a table.
In addition to the sorting, the data will be easier to support as you can affect it via SELECT/UPDATE/DELETE/INSERT queries, instead of fishing in form control properties.
0
 
LVL 1

Author Comment

by:NO_CARRIER
ID: 22767060
What is the easiest way of populating a local query with a query from the backend, where the data can be sorted / arranged as required.  I don't want to query the back end every time the user decides to apply an order by clause.

(Note the temporary table/query does not need to be updatable, it's only used to view data.)
0

Featured Post

Become an Android App Developer

Ready to kick start your career in 2018? Learn how to build an Android app in January’s Course of the Month and open the door to new opportunities.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Explore the ways to Unlock VBA Project Password Excel 2010 & 2013 documents. Go through the article and perform the steps carefully to remove VBA Excel .xls file.
Implementing simple internal controls in the Microsoft Access application.
Have you created a query with information for a calendar? ... and then, abra-cadabra, the calendar is done?! I am going to show you how to make that happen. Visualize your data!  ... really see it To use the code to create a calendar from a q…
How can you see what you are working on when you want to see it while you to save a copy? Add a "Save As" icon to the Quick Access Toolbar, or QAT. That way, when you save a copy of a query, form, report, or other object you are modifying, you…
Suggested Courses

569 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question