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Only primitive types (‘such as Int32, String, and Guid’) are supported in this context

Ok so I have a user table and a users_users table which basically just ties 2 users together.

My entityframework does not have a users_users in the Model, it only shows up as a relationship/property of the main user object. this relationship shows up as u.user1

so u.user1 is a collection of users where they exist in the users_users table.
this is great but..

I am trying to create a query where I can select all users from a user table, and as well create a boolean variable (called added in code below) in the select clause that will show whether there is a record for the user_user connection.

I am getting the error “Unable to create a constant value of type Only primitive types”

I understand I cannot use a in memory object with a Linq query when using the “Any()” command in the select so how would I go about doing this? I am new to LINQ.

using (myEntities entities = new myEntities())
        {
             Model.user u = entities.users.Single(m => m.emailLogon == System.Web.HttpContext.Current.User.Identity.Name);
             ObjectQuery<Model.user> susers = entities.users;

            var pplquery = (from suser in susers
                            select new { userId = suser.IdUser, FirstName = suser.contactinfo.FirstName, LastName = suser.contactinfo.LastName, added = 
                                u.user1.Any(cusr => cusr.IdUser == suser.IdUser)}).Take(15);


        }

Answer 1

using (myEntities entities = new myEntities())
        {
             Model.user u = entities.users.Single(m => m.emailLogon == System.Web.HttpContext.Current.User.Identity.Name);
             var susers = entities.users.ToList();

            var pplquery = (from suser in susers.AsQueryable()
                            select new { userId = suser.IdUser, FirstName = suser.contactinfo.FirstName, LastName = suser.contactinfo.LastName, added = 
                                u.user1.Any(cusr => cusr.IdUser == suser.IdUser)}).Take(15);


        }

Turn it into a list to execute the query, then you can create new objects selecting from that set.