One object in collection is 'Unique'

[Chicagoan2016]

We have a collection object of line Items but one object in the collection is different. The fee/amount associated with that line item needs values from 'Calling code' so we are implementing it similar to what @rockfordlhotka has discussed on p-129 of Data access book (Using Csla 4 books).
I was curious is it okay to define two methods on collection, 'AddWhateverItem' and 'AddItem'?

Regards

[rockfordlhotka]

It is fine, other than that things like datagrid controls will only use AddItem.

[Chicagoan2016]

@rockfordlhotka if we overload the AddItem with different parameters which one gets called by datagrid control?
Thanks

[rockfordlhotka]

iirc, the datagrid controls always call AddItem() with no parameters.

It is a missed opportunity by Microsoft, in that they did this by convention instead of by interface (like pretty much everything else in data binding).