пропустил формы

JewelryStore/JewelryStoreContracts/BindingModels/BackUpSaveBinidngModel.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace JewelryStoreContracts.BindingModels
+{
+    public class BackUpSaveBinidngModel
+    {
+        public string FolderName { get; set; } = string.Empty;
+    }
+}

JewelryStore/JewelryStoreContracts/BusinessLogicsContracts/IBackUpLogic.cs

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+using JewelryStoreContracts.BindingModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace JewelryStoreContracts.BusinessLogicsContracts
+{
+    public interface IBackUpLogic
+    {
+        void CreateBackUp(BackUpSaveBinidngModel model);
+    }
+}

JewelryStore/JewelryStoreContracts/StoragesContracts/IBackUpInfo.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace JewelryStoreContracts.StoragesContracts
+{
+    public interface IBackUpInfo
+    {
+        List<T>? GetList<T>() where T : class, new();
+        Type? GetTypeByModelInterface(string modelInterfaceName);
+    }
+
+}

JewelryStore/JewelryStoreDatabaseImplement/Implements/BackUpInfo.cs

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+using JewelryStoreContracts.StoragesContracts;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace JewelryStoreDatabaseImplement.Implements
+{
+    public class BackUpInfo : IBackUpInfo
+    {
+        public List<T>? GetList<T>() where T : class, new()
+        {
+            using var context = new JewelryStoreDatabase();
+            return context.Set<T>().ToList();
+        }
+        public Type? GetTypeByModelInterface(string modelInterfaceName)
+        {
+            var assembly = typeof(BackUpInfo).Assembly;
+            var types = assembly.GetTypes();
+            foreach (var type in types)
+            {
+                if (type.IsClass &&
+                type.GetInterface(modelInterfaceName) != null)
+                {
+                    return type;
+                }
+            }
+            return null;
+        }
+    }
+}