Question

I get the following error when I fill out my form in my MVC Application:

UpdateException was unhandled by user code

Unable to update the EntitySet 'Customer' because it has a DefiningQuery and no <InsertFunction> element exists in the <ModificationFunctionMapping> element to support the current operation.

My Customer table has: ID (PK), Name, Age, Address and a TimeStamp.

The form only allows Name and Address to be filled out (don’t know why – I’m new to MVC, ADO.NET btw)

This is my code:

 [HttpPost]
    public ActionResult Create(Customer customer)
    {
        customer.ID = 5;
        db.Customers.AddObject(customer);
        db.SaveChanges();
        return View();
    }

I am leaving customer.ID = 5 as a hard coded temp solution for the time being.

Answer 1

If ID is your primary key, Why you are updating that ? You should be updating the rest of the properties.

[HttpPost]
public ActionResult Create(Customer customer)
{
    customer.Name= "New name";
    db.Customers.AddObject(customer);
    db.SaveChanges();
    return View();
}