entity framework - How do you insert a complex object into the database? -

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Assume that these three tables are: 

  - car - id 1 2 - Event- ID Carrier Event Type Date Date 1 1 2014-04-28 12:00:00 - Event Type - ID Name 1 "Entry Created" 2 "Entry Entry in Sales Chart" 3 "Entry Entry Entry Removed "

How can the car object be added to the database, by using the Entity Framework (EF5 in my case)? I have tried several different ways to accomplish this, including the code below, but nothing has worked yet

car newCar = new car ( } {} Event newEvent = new event () {CarID = newCar.ID, EventTypeID = 2, DateTime added = Datetime.Now; } NewCar.Event.Add (newEvent); Context.Car.Add (newCar); Context.SaveChanges ();

Any support will be highly appreciated.

Edit: After an exception reference an attempt comes in the catch. Save changelog occurs (). The exception here is:

The INSERT statement is contradictory with the foreign key constraint "FK_Event_EventType". There is a conflict in the "cart system" database, the table "dbo.EventType", column 'id'

Note: There is a connection between these three tables, including events and event types. Can this be the issue? If so, then I have not figured out how to fix it.

The type of operation you want to change the order is: 

  Context.Car.Add (newCar); NewCar.Event.Add (newEvent); Context.SaveChanges ();

In this way the INSERT call for the car line (parent) will be released before the INSERT call for the event line (child), the foreign key must be avoided.


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