Add project files.

ConstructorApp.BusinessLayer/Concrete/ReferenceManager.cs

@@ -0,0 +1,46 @@
+using ConstructorApp.BusinessLayer.Abstract;
+using ConstructorApp.DataAccessLayer.Abstract;
+using ConstructorApp.EntityLayer.Entities;
+
+namespace ConstructorApp.BusinessLayer.Concrete
+{
+    public class ReferenceManager : IReferenceService
+    {
+        private readonly IReferenceDal _referenceDal;
+
+        public ReferenceManager(IReferenceDal referenceDal)
+        {
+            _referenceDal = referenceDal;
+        }
+
+        public void TAdd(Reference entity)
+        {
+           _referenceDal.Add(entity);
+        }
+
+        public int TCountAll()
+        {
+            return _referenceDal.CountAll();
+        }
+
+        public void TDelete(Reference entity)
+        {
+            _referenceDal.Delete(entity);
+        }
+
+        public Reference TGetByID(int id)
+        {
+            return _referenceDal.GetByID(id);
+        }
+
+        public List<Reference> TGetListAll()
+        {
+            return _referenceDal.GetListAll();
+        }
+
+        public void TUpdate(Reference entity)
+        {
+            _referenceDal.Update(entity);
+        }
+    }
+}