Next newby question.

I want to create a basic data entry form. In past VFP applications I accepted the PK of the record in the Init of
the form. If the PK was passed, I loaded the record and entered Edit Mode. If no PK was passed, I assumed Add Mode.
I don't see why I cannot do the same in my C# app:

frmUser oUser = new frmUser();

// If creating a new user...
oUser.SetupForm();

// If opening an existing user...
oUser.SetupForm(iUserKey);

oUser.ShowDialog();

I'm open to other ideas on this.

Next, when I am going into Add Mode, do I first create a data set, then add a row? Or is there some other way.
An example would be helpful.

Many thanks