diff --git a/PIbd-23_Panina.A.D_JewelryStore/JewelryStore.sln b/PIbd-23_Panina.A.D_JewelryStore/JewelryStore.sln
index 53d5613..68b05ee 100644
--- a/PIbd-23_Panina.A.D_JewelryStore/JewelryStore.sln
+++ b/PIbd-23_Panina.A.D_JewelryStore/JewelryStore.sln
@@ -19,7 +19,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JewelryStoreDatabaseImpleme
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JewelryStoreRestApi", "JewelryStoreRestApi\JewelryStoreRestApi.csproj", "{26DBFC2C-876E-47B7-B1BF-43873B807C6E}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JewelryStoreShopApp", "JewelryStoreShopApp\JewelryStoreShopApp.csproj", "{784174AD-62FD-4777-99D8-26ED43CBF2C9}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JewelryStoreClientApp", "JewelryStoreClientApp\JewelryStoreClientApp.csproj", "{DF7A00DE-A581-4A42-819F-4C49047FAE86}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "JewelryStoreShopApp", "JewelryStoreShopApp\JewelryStoreShopApp.csproj", "{784174AD-62FD-4777-99D8-26ED43CBF2C9}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -59,6 +61,10 @@ Global
 		{26DBFC2C-876E-47B7-B1BF-43873B807C6E}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{26DBFC2C-876E-47B7-B1BF-43873B807C6E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{26DBFC2C-876E-47B7-B1BF-43873B807C6E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{DF7A00DE-A581-4A42-819F-4C49047FAE86}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{DF7A00DE-A581-4A42-819F-4C49047FAE86}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{DF7A00DE-A581-4A42-819F-4C49047FAE86}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{DF7A00DE-A581-4A42-819F-4C49047FAE86}.Release|Any CPU.Build.0 = Release|Any CPU
 		{784174AD-62FD-4777-99D8-26ED43CBF2C9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{784174AD-62FD-4777-99D8-26ED43CBF2C9}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{784174AD-62FD-4777-99D8-26ED43CBF2C9}.Release|Any CPU.ActiveCfg = Release|Any CPU
diff --git a/PIbd-23_Panina.A.D_JewelryStore/JewelryStoreBusinessLogic/BusinessLogics/ClientLogic.cs b/PIbd-23_Panina.A.D_JewelryStore/JewelryStoreBusinessLogic/BusinessLogics/ClientLogic.cs
new file mode 100644
index 0000000..0dc1b59
--- /dev/null
+++ b/PIbd-23_Panina.A.D_JewelryStore/JewelryStoreBusinessLogic/BusinessLogics/ClientLogic.cs
@@ -0,0 +1,122 @@
+using JewelryStoreContracts.BindingModels;
+using JewelryStoreContracts.BusinessLogicsContracts;
+using JewelryStoreContracts.SearchModels;
+using JewelryStoreContracts.StoragesModels;
+using JewelryStoreContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace JewelryStoreBusinessLogic.BusinessLogics
+{
+    public class ClientLogic : IClientLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IClientStorage _clientStorage;
+        public ClientLogic(ILogger<ClientLogic> logger, IClientStorage clientStorage)
+        {
+            _logger = logger;
+            _clientStorage = clientStorage;
+        }
+        public bool Create(ClientBindingModel model)
+        {
+            CheckModel(model);
+            if (_clientStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(ClientBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id: {Id}", model.Id);
+            if (_clientStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public ClientViewModel? ReadElement(ClientSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. ClientFIO: {ClientFIO}. Email: {Email}. Id: {Id}.", model.ClientFIO, model.Email, model.Id);
+            var element = _clientStorage.GetElement(model);
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+            _logger.LogInformation("ReadElement find. Id: {Id}", element.Id);
+            return element;
+        }
+
+        public List<ClientViewModel>? ReadList(ClientSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. ClientFIO: {ClientName}. Email: {Email}. Id: {Id}.", model?.ClientFIO, model?.Email, model?.Id);
+            var list = model == null ? _clientStorage.GetFullList() : _clientStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
+            return list;
+        }
+
+        public bool Update(ClientBindingModel model)
+        {
+            CheckModel(model);
+            if (_clientStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(ClientBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.ClientFIO))
+            {
+                throw new ArgumentNullException("Нет ФИО клиента", nameof(model.ClientFIO));
+            }
+            if (string.IsNullOrEmpty(model.Email))
+            {
+                throw new ArgumentNullException("Нет почты клиента", nameof(model.Email));
+            }
+            if (string.IsNullOrEmpty(model.Password))
+            {
+                throw new ArgumentNullException("Нет пароля клиента", nameof(model.Password));
+            }
+            _logger.LogInformation("Client. ClientFIO: {ClientFIO}. Email: {Email}. Id: {Id}", model.ClientFIO, model.Email, model.Id);
+            var element = _clientStorage.GetElement(new ClientSearchModel
+            {
+                Email = model.Email
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Клиент с такой почтой уже есть");
+            }
+        }
+    }
+}
+