Insert operation in Ef with LINQ

Question

I am a beginner in Entity framework and I want to insert operation through Linq To entity.

My code:

databaseentity entity = new databaseentity();
car c = new car { name = TextBox1.Text };

But when I write Addobject in code it shows error and this method is not supported by Ef:

entity.cars.AddObject(c);

How can I resolve this problem? I have already added system.data.objects namespace.

What is the exact message and stack trace? – SLaks Jul 05 '13 at 12:32 — SLaks, Jul 05 '13 at 12:32
have you done `entity.SaveChanges()`? – Satpal Jul 05 '13 at 12:39 — Satpal, Jul 05 '13 at 12:39

score 1 · Accepted Answer · edited Jul 05 '13 at 12:35

1

Try using

entity.AddToCars(c);
entity.SaveChanges();

edited Jul 05 '13 at 12:35

Loetn

answered Jul 05 '13 at 12:34

Ali Baghdadi

Yes I tried but it shows error **Unable to update the EntitySet 'cars' because it has a DefiningQuery and no element exists in the element to support the current operation.** – user2516261 Jul 05 '13 at 12:40
have you added a primary key to your table in the database? – Ali Baghdadi Jul 05 '13 at 12:43
EF won't work with a table without Primary key. http://stackoverflow.com/questions/3996782/entity-framework-table-without-primary-key – HichemSeeSharp Jul 05 '13 at 13:16

1 Answers1