As the title suggests I have two models Products And Orders which are actually two table in my database and I have used a LINQ to SQL class to create there models. Now I wan to create a model named "OrderDetails" which will have properties from both the model like product name and id from product and Order number from orders something like this. An then I want to create a view from this custom model and from which I want to add "CRUD" operation. What should be my approach. And in many scenarios I may have to use data from more than 4 models. Please help. I'm wondering helplessly and I have only two days experience in ASP.NET MVC.
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2 Answers
I'd go this route:
namespace Models
{
public class OrderDetails
{
private Products _products;
private Order _order;
public OrderDetails(Order order, Products products)
{
_order = order;
_products = products;
}
// now expose whatever fields or logic you need.
// for instance:
public Customer OrderCustomer()
{
return order.Customer();
}
}
}
However, before you go around making all of these new models, are you sure you need them? Can you simply use two instances, either passed around separately or in a Tuple? You can get some useful abstraction here, but if you don't need it, keep it simple.
2 Comments
Soham Dasgupta
Thanks a lot but is it absolutely necessary to overload the constructor with the two model objects? Can i directly use object of the data context class of the LINQtoSQL class?
kevingessner
No, it's not. If you declare
_products and _orders as public properties (see msdn.microsoft.com/en-us/library/x9fsa0sw(VS.80).aspx), you can use the terse initializer syntax.Linq to SQL does not support custom mapping to the extent that you're looking to do. What you'll want to look at is a full ORM. I highly recommend nHibernate, but Entity Framework, if you must, will do what you want.
