// works as expected
public wws_Item LoadBySku(string sku)
{
    Expression< Func<wws_Item, bool> > func = itm => itm.Sku == sku;
 
    Entity = Context.wws_Items.Where(func).SingleOrDefault();
    if (Entity != null)
        OnLoaded(Entity);
 
    return this.Entity;

 StockContext context = new StockContext();
 User user = context.Users.Where( uss => uss.Pk == 1).SingleOrDefault();
 Response.Write(user.FullName + "<br>"); 
 user.FullName = user.FullName + "!";
 
 
 StockContext context2 = new StockContext();
 User user2 = context.Users.Where(uss => uss.Pk == 1).SingleOrDefault();
 Response.Write(user2.FullName + "<br>");
 user2.FullName = user2.FullName + "!";

public IQueryable<Role> GetRolesByUserId(int userId)
{
    var userRoles = from userRole in db.UserRoles
                            where userRole.UserId == userId
                            select userRole.RoleId;
 
            return from roles in db.Roles
                        where userRoles.Contains(roles.RoleId)
                        select roles;
}