Updating linq to sql entities sheena parveen dating scott hartnell
Another file called is also generated, which contains the Product entity class. During Implementing a WCF Service in the Real World, we create a business domain object (BDO) project to hold the intermediate data between the data access objects and the service interface objects.You need to save the data model in order to see these two files in the Solution Explorer. In this section, we will also add such a project to the solution for the same purpose.For the data access layer, we will use LINQ to Entities instead of the raw ADO. As you will see in the next section, we will use one LINQ statement to retrieve product information from the database and the update LINQ statements will handle the concurrency control for us easily and reliably.
After you've attached it it will be in the "Unchanged" state so will not do anything on Save Changes. (This is not my actual code - it is more explicit to aid understanding): Coming back to my blog years later (Feb 2013) to reuse the above code I found it didn't work in Entity Framework Code First Model.The update commands include setting of all changed fields, and the insert commands set all mapped columns not being auto-generated.In some cases, this may be not the behaviour you want.Recently, I have discussed about getting started linq to sql in c#That articles also covered for creating select query for retrieving both single and multiple results.