Question

I am trying to delete a whole row of data from a table. The code I’m using is:

OModel.Cart pncart = database.Carts.FirstOrDefault(
                        pn => pn.OrderId == Session["OOID"] && 
                        pn.PartNumber == Request.QueryString["PartNumber"]);

database.Carts.DeleteObject(pncart);
database.SaveChanges();

And the error it gives me, is:

LINQ to Entities does not recognize the method ‘System.Object
get_Item(System.String)’ method, and this method cannot be translated
into a store expression. Description: An unhandled exception
occurred during the execution of the current web request. Please
review the stack trace for more information about the error and where
it originated in the code.

Exception Details: System.NotSupportedException: LINQ to Entities
does not recognize the method ‘System.Object get_Item(System.String)’
method, and this method cannot be translated into a store expression.

It says something about NotSupportException, so I’m guessing you just can’t do it this way.

So, how would I go about deleting from the table? I thought this was the correct way.

Answer 1

I would declare variables for the Session["OOID"] and Request.QueryString["PartNumber"] instead of using them within your linq expression.

I believe it is telling you that it cannot translate those operations.