Entity Framework: There is already an open DataReader associated with this Command which must be closed first

Question

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My repository method has this code:

 public IEnumerable GetApplicationPositionHistor         


        

Answer 1

Quick solution :

public IEnumerable GetApplicationPositionHistories(int applicantId, int positionId)
    {
        return context.ApplicationsPositionHistory.Where(d => d.applicantPosition.ApplicantID == applicantId && d.applicantPosition.PositionID == positionId).Include(o => o.applicantPosition).ToList() ;
    }

If you want to know, why this fixing your problem, read about how LINQ and deffered execution works. In few words - if you dont "force" execution of the select by "enumerating" query by ToList, it is in fact executed too late - in view. And this is causing trouble with other queries which want to use same connection.