RepositoryModel implemented

H_PLUS_Sports/Contracts/IOrderItemRepository.cs

@@ -0,0 +1,21 @@
+using H_Plus_Sports.Models;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace H_Plus_Sports.Contracts
+{
+    public interface IOrderItemRepository
+    {
+        Task<OrderItem> Add(OrderItem item);
+
+        IEnumerable<OrderItem> GetAll();
+
+        Task<OrderItem> Find(int id);
+
+        Task<OrderItem> Remove(int id);
+
+        Task<OrderItem> Update(OrderItem item);
+
+        Task<bool> Exists(int id);
+    }
+}