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Pass parameter to query dynamically from form

Posted on 2014-04-27
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3,293 Views
Last Modified: 2014-04-28
Dear experts -
I have a simple request, but am getting confused.
I want to open a table in datasheet view, setting filter criteria based on a field from the form (e.g., if txtDate is not empty, filter records for that date).
I also want to use default sort criteria (multiple fields).

Opentable doesn't seem to do the job.
Openquery I'm wondering about, since I can't see how I can pass a criteria to it...

Thanks for any help -
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Question by:terpsichore
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7 Comments
 
LVL 58
ID: 40025909
Simplest thing to do is create a copy of the query to be used just with this form, then on the criteria line, use a reference to the form and control. i.e.

=Forms![<formname>]![<controlName>]

So if you had frmCustomer and a control called txtCustID, it would be:

=Forms![frmCustomer]![txtCustID]

Jim.
0
 
LVL 48

Expert Comment

by:Dale Fye (Access MVP)
ID: 40026026
Or you can use the main forms Load event, and the textboxes Afterupdate event to change the Filter property of the subform.  Something like:

Private Sub txt_Filter_AfterUpdate

    me.subForm_ControlName.Form.Filter = me.txt_Filter
    me.subform_ControlName.Form.FilterOn = (Len(me.txt_Filter & "") > 0)

End Sub

and in the main forms Load event:

Private Sub Form_Load

    Call txt_Filter_AfterUpdate

End Sub

And to add an order by clause:

me.subform_ControlName.OrderBy = "[field1], [field2] Desc, [Field3]"
me.subform_ControlName.OrderByOn = true

you could put that in the main forms Form_Load event.  If you want to give your users flexibility in using multiple columns to sort the datasheet, you might want to take a look at the article I wrote several months ago on sorting forms and lists.
0
 

Author Comment

by:terpsichore
ID: 40026077
actually, I am not using this query for anything on the form - it is only being used as a popup, from which the user can browse or copy/paste records.
Does that refine the way I would approach this?
Thanks!
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LVL 31

Expert Comment

by:Helen Feddema
ID: 40026195
Perhaps this could be done in a subform on the main form.  Depending on where the data for the query comes from, you might be able to just link the main form to the subform in the LinkMasterFields and LinkChildFields properties of the subform control, so that the subform displays records linked to the key value in the main form.

Here is a screen shot of such a form:

Main form and subform
0
 

Author Comment

by:terpsichore
ID: 40026665
sorry, maybe i'm still not being clear - the query I am running is independent of anything being used on the form EXCEPT 1 or 2 controls that I want to use as input variables in a standalone query - the user will push a button and invoke the query - if those fields are populated, it will set filter conditions based on that, and then open a query in datasheet mode that the user can browse or copy/paste.
THANKS
0
 
LVL 58

Accepted Solution

by:
Jim Dettman (Microsoft MVP/ EE MVE) earned 500 total points
ID: 40026915
In the standalone query, refer to the form controls as I showed in my first comment.

As long as the form is open, the query will be able to get the value of the controls, and filter the records based on that.

If you don't want to see the form when the datasheet pops up, you can hide it by setting it's visible property to false.   It just needs to be open, but doesn't matter if it's visible or not.

Jim.
0
 

Author Closing Comment

by:terpsichore
ID: 40026922
thank you - this works for me
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