Hi Daniela, I have posted an example that illustrates how to create the classes and some sample usage at:
http://pastebin.com/cDmwxZL9 I have tried to explain via comments where possible, but feel free to ask if you have any doubts. I hope you are familiar with VB 9.0 syntax. A couple of questions in your post remain unanswered and I try to address them below: 1. What about Add/Delete? when I delete a customer shoud I delete a budget? Don't know how to do this. Add, Delete are implemented in my example. When you delete a Customer instance, associated budget instances are automatically deleted. 2. What about other elements in customer class like address and contact number? Those elements get added/deleted/modified when the Customer instance is added/deleted/modified. You need to implement custom collection classes only if you are using a version of .NET prior to 2.0 (pre-VS 2005) or the existing collection classes do not suffice for your requirement. In this case, I believe that the existing generic collections do suffice. Another point is that I have loaded data into the instances manually. In a real-world scenario, you would load the data from database tables. Ideally, the customer's budgets would be loaded when a customer is created (for instance, by initiating a database call within the Customer class constructor). On Jan 11, 5:57 pm, Daniela Zurita <danielaazur...@gmail.com> wrote: > Thank you for your answers, Stephen and Cerebrus! > But now, could you please give me an example of definition and how to > implement the classes? > I've got an example and there are points i don'get. here my questions. > > > thanks a million! > Dani > -- You received this message because you are subscribed to the Google Groups "DotNetDevelopment, VB.NET, C# .NET, ADO.NET, ASP.NET, XML, XML Web Services,.NET Remoting" group. To post to this group, send email to dotnetdevelopment@googlegroups.com To unsubscribe from this group, send email to dotnetdevelopment+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/dotnetdevelopment?hl=en?hl=en or visit the group website at http://megasolutions.net