Error handling in Active X Data dlls

[mfoster]

Hi

I want to use some classes in an Active X Dll that would represent tables in an Acess database

This dll would then be accessed from my app meaning that that the data would be seperated from the front end

What I am not sure about though is how to handle errors

If I placed addnew, edit or update methods in the class would they have to be made functions returning a boolean value rather than normal sub methods

the code from the front end would then be

set ObjSales = new SalesDll.clsSales

if objsales.addnew then
' add new items

if objsales.update then
msgbox "all ok "
else
msgbox "Errors occured"
end if

Therefore what I need to know is how to communcicate errors betweeen the dll and the calling form

many thanks

Mark

[monte96]

You have to raise errors in the dll that are then handled by the calling application. You can either raise the errors that are generated from the operation (such as an unsuccessful AddNew) or generate your own error codes.