Thanks Julien,

with the two links I have posted I didn't find any clear explanation  there .

I use VS 2012, yes I run DNN 7 locally, yes I get the http://dnndev.me it works fine.

 

YES

Dear Julien Girerd,
I really want to thank you for your follow up with me to get what I need.
what I need exactly that suppose that I have database school with two table. Class and Student and the relation 1-m

what I need is the following.
1. write a function on page_load in view.ascx to get all Student in Class A.
2. write a function to insert in table Student like a registration form.
3. write a function to update and delete Students and Class.

I appreciate your help if you can write the code in C# using DAL2.