RepositoryModel implemented

H_PLUS_Sports/Contracts/ICustomerRepository.cs

@@ -0,0 +1,19 @@
+using H_Plus_Sports.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace H_Plus_Sports.Contracts
+{
+    public interface ICustomerRepository
+    {
+        Task<Customer> Add(Customer customer);
+        IEnumerable<Customer> GetAll();
+        Task<Customer> Find(int id);
+        Task<Customer> Update(Customer customer);
+        Task<Customer> Remove(int id);
+        Task<bool> Exist(int id);
+
+    }
+}