Passing Parameters via a button to a form

I have a form on a page based on a simple table with with the following fields
Code, Name and Address
I would like to put a button on this form which will then open a separate page which contains a form based on a different table which has the following fields
Code, Notes
When I click on the button I would like it to open the second form in edit mode if a record already exists.
So I need to pass the value of the code field in form 1 to query in the record in form 2.
I am very new to Apex and not sure how to do help much appreciated.

Hi,
As far as I know the default behavior is that if you pass the primary key to another form the record is opened in 'edit' mode, if you pass other fields than the PK to another form the form is opened in 'add new record' mode and the PK is generated when you save the record.
So if you can do a lookup of the PK before you go to the second form and call the form with this PK you should be able to edit.
Not sure if that answered your question though... :)
Ciao
Bas

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