Error Message: “Only primitive types or enumeration types are supported in this context.”

Question

I\'m working a report for an asp.net page and I\'m trying to assign the results of this linq statement to an existing dataset but I\'m receiving the \"Only primitive types or en

Answer 1

You can't mix entity types from different contexts in single LINQ query. Either put them into single context, or try to execute this:

var employeeIds = (from o in contextHistory.emp_history select o.employeeID).ToList();

and then pass this list into the second query:

var rslt = (from c in contextTable.TableofOrganizationRpts
            where !employeeIds.Contains((int)c.employeeid_fk)
            select c).ToList();

This should generate IN condition in resulting SQL query. Note, that this might work slow.