Hi Linda,

>I have a system for which the user selects a patient from one form before proceeding to a form that allows maintenance of patient data. If it is a new patient, I pass a zero as the patientid and create the new row using the form's NewRow() method in the constructor of the patient maintenance form. If I cancel using mmButtonCancel, I get an error from mmBusinessForm.GetCurrentRow() because it gets a null value when checking for the row count. I tried calling oPatient.GetEmptyDataSet() before calling the NewRow() method but that didn't help. Any suggestions?

Does your code work calling the forms NewRow() method if you do not cancel? I am wondering if your new row is actually created or not. The form.NewRow() ultimately calls the business Objects NewRow method. You could put a check in first to verify if your new row is created or not.
Tim