Hello,

I have what seems to be a very simple scenario, but for whatever reason can't get it to work correctly.

I defined parent/child relationship between 2 BOs; 1) setup ParentRelationShip property in BO designer by PK_Id to FK_Id and 2) Dropped 2 objects on the form and set ParentObject property.

I want to loop through parent objects and inner loop children of each parent. But I am getting all "Children" objects for each parent, instead of true children as defined by IDs. What am I missing?

Also is there way to get strongly typed Child object from parent instead of: parentBO.ChildBusinessObjects[0];

here's relevant code:

Thank you for your help.

Kind of . One of the major differences between the .NET mindset and the VFP mindset is that you are working in disconnected data, and you want to be very conscious of when you are making trips to the server to retrieve data, and what data you are retrieving. For that reason, we won't automatically go and grab the child data from the server for you in the way you are describing. 

You need to have the flexibility to pull back all pertinent child data at once and then filter off of the selected parent record (one big trip to the server), or just pull back the child data relating to current record every time a different parent is selected (many small trips to the server.) As outlined in my earlier post above, either one could be more efficient or desirable in different situations.

Hi Dustin -



I will re-read the post shortly. I think my question was more along the lines of given that at times it is more efficient to make many, smaller trips to the back end, it seems odd that with all of the properties already set between the parent and child business objects that the framework doesn't provide an option for having the child BOs requery on a change to the parent's row (or at least to the related FK value) without the developer handling the fill. Just seems like the hooks are all in place to make this a framework-provided feature and eliminate the need for the developer to roll similar code many times.



My question is probably more a result of my work in the Visual FoxExpress framework, rather than VFP specifically. That said I do find both frameworks similar in many respects, so that will drive additional questions of this nature.



Thanks!

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