Question

I have a table with the primary key as the identity column. I’m doing an insert with linq-to-sql and I was wondering if there’s a way to return the ID of the row that was inserted and how we know for sure that the insert happened.

Thanks for your suggestions.

Answer 1

The primary key property of the entity that was used for the insert will be updated after the call to SubmitChanges with the ID from the database.

Ex:

using (var dc = new MyDataContext())
{
    MyEntity entity = new MyEntity();

    dc.MyEntities.InsertOnSubmit(entity);
    dc.SubmitChanges();

    int pkValue = entity.PKColumn
}