ComputerHardwareStore/ComputerHardwareStoreContracts/StorageContracts/IBuidStorage.cs

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+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.SearchModels;
+using ComputerHardwareStoreContracts.ViewModels;
+
+namespace ComputerHardwareStoreContracts.StorageContracts
+{
+    public interface IBuidStorage
+    {
+        List<BuildViewModel> GetFullList();
+        List<BuildViewModel> GetFilteredList(BuildSearchModel model);
+        BuildViewModel? GetElement(BuildSearchModel model);
+        BuildViewModel? Insert(BuildBindingModel model);
+        BuildViewModel? Update(BuildBindingModel model);
+        BuildViewModel? Delete(BuildBindingModel model);
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreContracts/StorageContracts/ICommentStorage.cs

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+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.SearchModels;
+using ComputerHardwareStoreContracts.ViewModels;
+
+namespace ComputerHardwareStoreContracts.StorageContracts
+{
+    public interface ICommentStorage
+    {
+        List<CommentViewModel> GetFullList();
+        List<CommentViewModel> GetFilteredList(CommentSearchModel model);
+        CommentViewModel? GetElement(CommentSearchModel model);
+        CommentViewModel? Insert(CommentBindingModel model);
+        CommentViewModel? Update(CommentBindingModel model);
+        CommentViewModel? Delete(CommentBindingModel model);
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreContracts/StorageContracts/IComponentStorage.cs

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+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.SearchModels;
+using ComputerHardwareStoreContracts.ViewModels;
+
+namespace ComputerHardwareStoreContracts.StorageContracts
+{
+    public interface IComponentStorage
+    {
+        List<ComponentViewModel> GetFullList();
+        List<ComponentViewModel> GetFilteredList(ComponentSearchModel model);
+        ComponentViewModel? GetElement(ComponentSearchModel model);
+        ComponentViewModel? Insert(ComponentBindingModel model);
+        ComponentViewModel? Update(ComponentBindingModel model);
+        ComponentViewModel? Delete(ComponentBindingModel model);
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreContracts/StorageContracts/IOrderStorage.cs

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+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.SearchModels;
+using ComputerHardwareStoreContracts.ViewModels;
+
+namespace ComputerHardwareStoreContracts.StorageContracts
+{
+    public interface IOrderStorage
+    {
+        List<OrderViewModel> GetFullList();
+        List<OrderViewModel> GetFilteredList(OrderSearchModel model);
+        OrderViewModel? GetElement(OrderSearchModel model);
+        OrderViewModel? Insert(OrderBindingModel model);
+        OrderViewModel? Update(OrderBindingModel model);
+        OrderViewModel? Delete(OrderBindingModel model);
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreContracts/StorageContracts/IProductStorage.cs

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+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.SearchModels;
+using ComputerHardwareStoreContracts.ViewModels;
+
+namespace ComputerHardwareStoreContracts.StorageContracts
+{
+    public interface IProductStorage
+    {
+        List<ProductViewModel> GetFullList();
+        List<ProductViewModel> GetFilteredList(ProductSearchModel model);
+        ProductViewModel? GetElement(ProductSearchModel model);
+        ProductViewModel? Insert(ProductBindingModel model);
+        ProductViewModel? Update(ProductBindingModel model);
+        ProductViewModel? Delete(ProductBindingModel model);
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreContracts/StorageContracts/IPurchaseStorage.cs

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+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.SearchModels;
+using ComputerHardwareStoreContracts.ViewModels;
+
+namespace ComputerHardwareStoreContracts.StorageContracts
+{
+    public interface IPurchaseStorage
+    {
+        List<PurchaseViewModel> GetFullList();
+        List<PurchaseViewModel> GetFilteredList(PurchaseSearchModel model);
+        PurchaseViewModel? GetElement(PurchaseSearchModel model);
+        PurchaseViewModel? Insert(PurchaseBindingModel model);
+        PurchaseViewModel? Update(PurchaseBindingModel model);
+        PurchaseViewModel? Delete(PurchaseBindingModel model);
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreContracts/StorageContracts/IStoreKeeperStorage.cs

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+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.SearchModels;
+using ComputerHardwareStoreContracts.ViewModels;
+
+namespace ComputerHardwareStoreContracts.StorageContracts
+{
+    public interface IStoreKeeperStorage
+    {
+        List<StoreKeeperViewModel> GetFullList();
+        List<StoreKeeperViewModel> GetFilteredList(StoreKeeperSearchModel model);
+        StoreKeeperViewModel? GetElement(StoreKeeperSearchModel model);
+        StoreKeeperViewModel? Insert(StoreKeeperBindingModel model);
+        StoreKeeperViewModel? Update(StoreKeeperBindingModel model);
+        StoreKeeperViewModel? Delete(StoreKeeperBindingModel model);
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreContracts/StorageContracts/IVendorStorage.cs

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+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.SearchModels;
+using ComputerHardwareStoreContracts.ViewModels;
+
+namespace ComputerHardwareStoreContracts.StorageContracts
+{
+    public interface IVendorStorage
+    {
+        List<VendorViewModel> GetFullList();
+        List<VendorViewModel> GetFilteredList(VendorSearchModel model);
+        VendorViewModel? GetElement(VendorSearchModel model);
+        VendorViewModel? Insert(VendorBindingModel model);
+        VendorViewModel? Update(VendorBindingModel model);
+        VendorViewModel? Delete(VendorBindingModel model);
+    }
+}