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Changing the recordsource and passing parameters

I have a form that has it's recordsource set to a query which includes the data from two tables.  The first table is a master table and the second is a detail table.  I am using an unbound form to ask the user which master record they want.  The form has the name & address information from the master table plus a subform for the detail records.  The navigation keys (custom) are in the subform.  All works well for editing and deleting but... when I need to add a detail record I run into trouble.  I know what mode I'm in because I pass openargs to the form.  How can I locate the master record that they want, pass key information to the form and go into add mode?   What about the link fields in the subform?  Can anyone help me?  Does anyone have any samples that do this?  I'm am very frustrated....HELP!
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BangerterCommented:
create a button on the main form called search. put an unbound text control box next to the button. in the button's 'OnClick' event go to the code builder and put this.

forms![MyMainForm].recordsource = "SELECT DISTINCTROW ....

copy the sql statement of your main form here then at the end of it put in the where clause

where (form![MyMainform]![MyKeyedField] = [MyUnboundField])

here is an example of what the statement it might look like in the buttons 'OnClick' event:

forms![MyMainForm].recordsource = select distincrow COLLECT.InputDate, COLLECT.Lease, COLLECT.Lessee, COLLECT.ILAccount, COLLECT.LesseeID, COLLECT.Address, COLLECT.ILNote, COLLECT.ChgOffAmt, COLLECT.Gross, COLLECT.AucSold
FROM COLLECT
WHERE (COLLECT.Lease=[forms]![fpremaint]![field0])
order by collect.inputdate desc;

i would also put a button titled 'Clear' next to your search button and in its 'OnClick' event put the same thing in the code except leave the 'where' statement out at the end.

you should now be able to search for any record you want and when it comes up you can then click in the subform and add a new record.

understand too that you cant add a record to the subform for a client that does not yet exist in the main form.

let me know if this is not what you wanted and i can you help you further with more detail as to what you want
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AccessedAuthor Commented:
Bangerter,

Thank-you for your response - it got me thinking.  My problem - believe it or not - was that I was opening up the form with ACFORMADD.  Duhhhhh
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