We will need to create a Save() method to handle create and update operations, a Delete() method to handle deletions, and a few GetX() methods to retrieve data.
In order to implement the basic Save() and Delete() methods, we should do two things:
Insert the logic for the method
Wrap the method in a transaction
Why do we need to wrap it in a transaction? If something goes wrong and our action can't be completed, we can roll back the transaction and handle it in our code.
public int Save(Contact contact)
{
ITransaction transaction = null;
try
{
transaction = Session.BeginTransaction();
Session.SaveOrUpdate(contact);
transaction.Commit();
return contact.Id;
}
catch (Exception ex)
{
log.Error(ex);
if (transaction != null && transaction.IsActive)
transaction.Rollback();
throw;
}
}Adding our Save() method in VB.NET is just as trivial.
Public Function Save(ByVal contact As Contact) As System.Nullable(Of Integer) Dim...