code guidelines

src/Yavsc/ApiControllers/Relationship/ContactsApiController.cs

@@ -12,7 +12,7 @@ namespace Yavsc.Controllers
     [Route("api/ContactsApi")]
     public class ContactsApiController : Controller
     {
-        private ApplicationDbContext _context;
+        private readonly ApplicationDbContext _context;
 
         public ContactsApiController(ApplicationDbContext context)
         {
@@ -125,4 +125,4 @@ namespace Yavsc.Controllers
             return _context.ClientProviderInfo.Count(e => e.UserId == id) > 0;
         }
     }
-}
+}