в слой контрактов добавлены классы клиенты и изменены классы заказов

SushiBarContracts/BindingModel/OrderBindingModel.cs

@@ -12,6 +12,8 @@ namespace SushiBarContracts.BindingModel
     {
         public int Id { get; set; }
         public int SushiId { get; set; }
+        public int ClientId { get; set; }
+        public string ClientFIO { get; set; } = string.Empty;
         public int Count { get; set; }
         public double Sum { get; set; }
         public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;

SushiBarContracts/BusinessLogicsContracts/IClientLogic.cs

@@ -0,0 +1,20 @@
+using SushiBarContracts.BindingModel;
+using SushiBarContracts.SearchModel;
+using SushiBarContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SushiBarContracts.BusinessLogicsContracts
+{
+    public interface IClientLogic
+    {
+        List<ClientViewModel> ReadList(ClientSearchModel? model);
+        ClientViewModel? ReadElement(ClientSearchModel model);
+        bool Create(ClientBindingModel model);
+        bool Update(ClientBindingModel model);
+        bool Delete(ClientBindingModel model);
+    }
+}

SushiBarContracts/SearchModel/ClientSearchModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SushiBarContracts.SearchModel
+{
+    public class ClientSearchModel
+    {
+        public int? Id { get; set; }
+        public string? Email { get; set; }
+        public string? Password { get; set; }
+    }
+}

SushiBarContracts/SearchModel/OrderSearchModel.cs

@@ -9,6 +9,7 @@ namespace SushiBarContracts.SearchModel
     public class OrderSearchModel
     {
         public int? Id { get; set; }
+        public int? ClientId { get; set; }
         public DateTime? DateFrom { get; set; }
         public DateTime? DateTo { get; set; }
 

SushiBarContracts/StoragesContracts/IClientStorage.cs

@@ -0,0 +1,21 @@
+using SushiBarContracts.BindingModel;
+using SushiBarContracts.SearchModel;
+using SushiBarContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SushiBarContracts.StoragesContracts
+{
+    public interface IClientStorage
+    {
+        List<ClientViewModel> GetFullList();
+        List<ClientViewModel> GetFilteredList(ClientSearchModel model);
+        ClientViewModel? GetElement(ClientSearchModel model);
+        ClientViewModel? Insert(ClientBindingModel model);
+        ClientViewModel? Update(ClientBindingModel model);
+        ClientViewModel? Delete(ClientBindingModel model);
+    }
+}

SushiBarContracts/ViewModels/ClientViewModel.cs

@@ -0,0 +1,26 @@
+using SushiBarDataModels;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SushiBarContracts.ViewModels
+{
+    public class ClientViewModel : IClientModel
+    {
+        public int Id { get; set; }
+
+        [DisplayName("ФИО Клиента")]
+        public string ClientFIO { get; set; } = string.Empty;
+
+        [DisplayName("Логин (эл. почтаы)")]
+        public string Email { get; set; } = string.Empty;
+
+        [DisplayName("Пароль")]
+        public string Password { get; set; } = string.Empty;
+
+
+    }
+}

SushiBarContracts/ViewModels/OrderViewModel.cs

@@ -10,9 +10,13 @@ namespace SushiBarContracts.ViewModels
         [DisplayName("Номер")]
         public int Id { get; set; }
         public int SushiId { get; set; }
+        public int ClientId { get; set; }
 
 
-        [DisplayName("Изделие")]
+        [DisplayName("Имя клиента")]
+        public string ClientFIO { get; set; } = string.Empty;
+
+        [DisplayName("Суши")]
         public string SushiName { get; set; } = string.Empty;