Entity Framework and layered structure

[archimede]

I'm creating a new web application with Entity Framework. I want to use the following layered structure:

User Interface Layer

Business Object Layer

Interface

Entity Framework Layer

The Business Object Layer now implements the interface on bottom layer using the Entity Framework Objects.

In the user interface I use a Telerik component (radGrid) to show/edit/update/delete data. Now I can show entity data to user simply doing a simple (linq to entities) query like:

 var stabilimenti = from s in entities.Stabilimenti
                               select s;

My problem is to persist data on database when user changes them.

In my user page i want to catch the "RadGrid1_UpdateCommand" and in some way persist data modification. Debugging i've seen that at the update event i've lost all data modification (the program executes a Page_Load just before).

How can I persist modification? Have I to use an Entity DataSource and manually place there datas retrieved from Entity Framework entities? Or what else should I do?

[Tsvetoslav]

Hello Francesco,

Attached is a small sample that demonstrates your scenario.

Regards,
Tsvetoslav
the Telerik team

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