How do I use LINQ-to-Entities to insert data into a specific table?

Question

Question: what is the LINQ-to-Entity code to insert an order for a specific customer?

Answer 1

I don't get what the problem is, exactly.

var mycustomer = context.Customers.Where(x => x.id == 100).FirstOrDefault();
if(mycustomer != null)
{
  mycustomer.Orders.Add(myorder); 
}
context.SaveChanges();