If you are using a fairly recent release of FMP and you truly want your user to scroll through several hundred portal records, try using a relationship using the cross product ("X" ) type of relationship. If you are using an earlier release, You can define a calcfield in both tables that returns the same value (Traditionally, we used the constant '1') and use them to create a relationship between the two tables.
Either approach allows your portal to display all the records from the portal's table no matter what record is current in your main table.
Personally, if I had several hundred records to display in a portal, I'd try to organize the records into subcategories and use a valuelist formatted field as part of the portal relationship so the user can work with smaller groups of records at one time.
Example: List several hundred U. S. cities in your table, but identify which state they belong to in a second field. Then set up the portal so the user can select All, California, Arizona,.... as a way to view and work with a smaller number of records at one time.
Thanks! I'm using FileMakerPro 10 Advanced.
I'll see if I can figure out a way to organize into sub-categories. Unfortunately reality is messier than database keys.
Unfortunately reality is messier than database keys.
Too too too true.