1 : 1 Relationship in Entity Framework

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Hi,

I am working on Entity Framework 4.1. I have created sample application in which i have three Entitees
1] Order Entity
OrderNumber
OrderDate
Status
CustomerId

2] OrderItem Entity
OrderItemNo
Quantity
Price
OrderNumber

3] Shipping Entity
ShippingId
OrderNumber
ShippingAddress
PhoneNumber

I want to create a 1:1 relationship between Order and shipping. But when i create the 1 : 1 relationship between them it gives me exception regarding ShipperId.
I am saving the order item first and then using that order number for storing the order items related to that order and then i am savin the shipping details for that respective order number.

Can u please help me how should i design my Entity Model.

Thanks,
Umesh Tayade

Posted 28-Sep-11 5:54am

Member 4550493

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Ed Nutting 28-Sep-11 12:36pm

Can you please improve your question by including the actual error message itself? Thanks, Ed :)

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Simon Bang Terkildsen · Answer 1 · 2011-09-28T06:39:00

First of all, don't just tell us you recieve an exception, if you do not post the exact exception then you might aswell just don't mention it at all.

That said in a 1 to 1 relation the EF expects that the two tables use the same primary key, which they also should.
So making OrderNumber the primary key in your Shepping table would resolve your problem.