添加项目文件。

XXCpzs/Services/IDataStore.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace XXCpzs.Services
+{
+    public interface IDataStore<T>
+    {
+        Task<bool> AddItemAsync(T item);
+        Task<bool> UpdateItemAsync(T item);
+        Task<bool> DeleteItemAsync(string id);
+        Task<T> GetItemAsync(string id);
+        Task<IEnumerable<T>> GetItemsAsync(bool forceRefresh = false);
+    }
+}