asp.net - (are you missing a using directive or an assembly reference?) -

i writing common business logic class in app_code folder connecting database using efw.but showing following error " error 1 type or namespace name 'job' not found"

using system; using system.collections.generic; using system.linq; using system.web; using system.data;     namespace webapplication6.app_code     {         public class blcommon         {               public list<job> getjobs()             {                 pubs2012entities pubsobject = new pubs2012entities();                 var x = pubsobject.jobs.tolist<job>();                 return x;             }         }     }   , class generated efw jobs table  namespace webapplication6.app_code      {         using system;         using system.collections.generic;          public partial class job         {             public short job_id { get; set; }             public string job_desc { get; set; }             public byte min_lvl { get; set; }             public byte max_lvl { get; set; }         }     } 

seem dont have reference assembly wich contain mentioned class