diff --git a/BusinessLogic/BusinessLogic/SellLogic.cs b/BusinessLogic/BusinessLogic/SellLogic.cs
index aacd8e5..99c9230 100644
--- a/BusinessLogic/BusinessLogic/SellLogic.cs
+++ b/BusinessLogic/BusinessLogic/SellLogic.cs
@@ -45,7 +45,7 @@ namespace BusinessLogic.BusinessLogic
         }
         public IEnumerable<SellViewModel> GetElements(SellSearchModel? model)
         {
-            var sell_list = _sellStorage.GetList(model);
+            var sell_list = model == null ? _sellStorage.GetFullList(model) : _sellStorage.GetFilteredList(model);
             if (sell_list is null || sell_list.Count() == 0)
             {
                 _logger.LogWarning("ReadList return null list");
diff --git a/Contracts/StorageContracts/IPurchaseStorage.cs b/Contracts/StorageContracts/IPurchaseStorage.cs
index 855831a..1b141ec 100644
--- a/Contracts/StorageContracts/IPurchaseStorage.cs
+++ b/Contracts/StorageContracts/IPurchaseStorage.cs
@@ -1,5 +1,6 @@
 using Contracts.BindingModels;
 using Contracts.SearchModels;
+using Contracts.ViewModels;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -10,14 +11,15 @@ namespace Contracts.StorageContracts
 {
 	public interface IPurchaseStorage
 	{
-		PurchaseBindingModel? Insert(PurchaseBindingModel model);
+        PurchaseViewModel? Insert(PurchaseBindingModel model);
 
-		IEnumerable<PurchaseBindingModel> GetList(PurchaseSearchModel? model);
+		List<PurchaseViewModel> GetFullList(PurchaseSearchModel? model);
+        List<PurchaseViewModel> GetFilteredList(PurchaseSearchModel? model);
 
-		PurchaseBindingModel? GetElement(PurchaseSearchModel model);
+        PurchaseViewModel? GetElement(PurchaseSearchModel model);
 
-		PurchaseBindingModel? Update(PurchaseBindingModel model);
+        PurchaseViewModel? Update(PurchaseBindingModel model);
 
-		PurchaseBindingModel? Delete(PurchaseSearchModel model);
+        PurchaseViewModel? Delete(PurchaseSearchModel model);
 	}
 }
diff --git a/DatabaseImplement/Implements/PurchaseStorage.cs b/DatabaseImplement/Implements/PurchaseStorage.cs
index 2323dd2..7efd5fa 100644
--- a/DatabaseImplement/Implements/PurchaseStorage.cs
+++ b/DatabaseImplement/Implements/PurchaseStorage.cs
@@ -1,6 +1,9 @@
 using Contracts.BindingModels;
 using Contracts.SearchModels;
 using Contracts.StorageContracts;
+using Contracts.ViewModels;
+using DatabaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -11,29 +14,87 @@ namespace DatabaseImplement.Implements
 {
 	public class PurchaseStorage : IPurchaseStorage
 	{
-		public PurchaseBindingModel? Delete(PurchaseSearchModel model)
+		public PurchaseViewModel? Delete(PurchaseSearchModel model)
 		{
-			throw new NotImplementedException();
-		}
+            using var context = new Database();
+            var element = context.Purchases.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Purchases.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
 
-		public PurchaseBindingModel? GetElement(PurchaseSearchModel model)
+		public PurchaseViewModel? GetElement(PurchaseSearchModel model)
 		{
-			throw new NotImplementedException();
-		}
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new Database();
+            return context.Purchases
+            .Include(x => x.Products)
+            .ThenInclude(x => x.Product)
+            .FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
 
-		public IEnumerable<PurchaseBindingModel> GetList(PurchaseSearchModel? model)
+		public List<PurchaseViewModel> GetFullList(PurchaseSearchModel? model)
 		{
-			throw new NotImplementedException();
-		}
+            using var context = new Database();
+            return context.Purchases
+            .Include(x => x.Products)
+            .ThenInclude(x => x.Product)
+            .ToList()
+            .Select(x => x.GetViewModel)
+            .ToList();
+        }
+        public List<PurchaseViewModel> GetFilteredList(PurchaseSearchModel? model)
+        {
+            using var context = new Database();
+            return context.Purchases
+            .Include(x => x.Products)
+            .ThenInclude(x => x.Product)
+            .ToList()
+            .Select(x => x.GetViewModel)
+            .ToList();
+        }
 
-		public PurchaseBindingModel? Insert(PurchaseBindingModel model)
+        public PurchaseViewModel? Insert(PurchaseBindingModel model)
 		{
-			throw new NotImplementedException();
-		}
+            using var context = new Database();
+            var purchase = Purchase.Create(context, model);
+            if (purchase == null)
+                return null;
+            context.Purchases.Add(purchase);
+            context.SaveChanges();
+            return purchase.GetViewModel;
+        }
 
-		public PurchaseBindingModel? Update(PurchaseBindingModel model)
+		public PurchaseViewModel? Update(PurchaseBindingModel model)
 		{
-			throw new NotImplementedException();
-		}
+            using var context = new Database();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                var purchase = context.Purchases.FirstOrDefault(rec =>
+                rec.Id == model.Id);
+                if (purchase == null)
+                {
+                    return null;
+                }
+                purchase.Update(model);
+                context.SaveChanges();
+                purchase.UpdateProducts(context, model);
+                transaction.Commit();
+                return purchase.GetViewModel;
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
 	}
 }
diff --git a/DatabaseImplement/Implements/SellStorage.cs b/DatabaseImplement/Implements/SellStorage.cs
index 090188f..d82d531 100644
--- a/DatabaseImplement/Implements/SellStorage.cs
+++ b/DatabaseImplement/Implements/SellStorage.cs
@@ -17,13 +17,24 @@ namespace DatabaseImplement.Implements
 	{
 		public SellViewModel? Delete(SellSearchModel model)
 		{
-            throw new NotImplementedException();
+            using var context = new Database();
+            var element = context.Sells.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Sells.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
         }
 
 		public SellViewModel? GetElement(SellSearchModel model)
 		{
-			throw new NotImplementedException();
-		}
+            using var context = new Database();
+            return context.Sells
+                    .Include(x => x.SupplyDoc)
+                    .FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
 
         public IEnumerable<SellViewModel> GetFilteredList(SellSearchModel? model)
         {
@@ -36,7 +47,7 @@ namespace DatabaseImplement.Implements
             return context.Sells
                 .Include(x => x.SupplyDoc)
                 .ToList()
-                .Select((Sell sell, int index) => sell.GetViewModel())
+                .Select((Sell sell, int index) => sell.GetViewModel)
                 .ToList();
         }
 
@@ -50,7 +61,7 @@ namespace DatabaseImplement.Implements
             }
 			context.Sells.Add(sell);
 			context.SaveChanges();
-			return sell.GetViewModel();
+			return sell.GetViewModel;
 		}
 
 		public SellViewModel? Update(SellBindingModel model)
@@ -67,7 +78,7 @@ namespace DatabaseImplement.Implements
 				sell.Update(model);
 				context.SaveChanges();
                 transaction.Commit();
-                return sell.GetViewModel();
+                return sell.GetViewModel;
             }
             catch
             {
diff --git a/DatabaseImplement/Models/Purchase.cs b/DatabaseImplement/Models/Purchase.cs
index a3e999e..aa552b1 100644
--- a/DatabaseImplement/Models/Purchase.cs
+++ b/DatabaseImplement/Models/Purchase.cs
@@ -1,4 +1,5 @@
 using Contracts.BindingModels;
+using Contracts.SearchModels;
 using Contracts.ViewModels;
 using DataModels.Enums;
 using DataModels.Models;
@@ -11,6 +12,7 @@ using System.Linq;
 using System.Runtime.Serialization;
 using System.Text;
 using System.Threading.Tasks;
+using static Microsoft.EntityFrameworkCore.DbLoggerCategory;
 
 namespace DatabaseImplement.Models
 {
@@ -41,7 +43,7 @@ namespace DatabaseImplement.Models
         }
 		[ForeignKey("PurchaseId")]
 		public virtual List<PurchaseProducts> Products { get; set; } = new();
-        public static Purchase Create(Database context, SellBindingModel model)
+        public static Purchase Create(Database context, PurchaseBindingModel model)
         {
             return new Purchase()
             {
@@ -51,7 +53,7 @@ namespace DatabaseImplement.Models
 
             };
         }
-        public PurchaseBindingModel GetBindingModel() => new()
+        public PurchaseBindingModel GetBindingModel => new()
 		{
 			Id = Id,
 			DatePurchase = DatePurchase,
@@ -60,7 +62,7 @@ namespace DatabaseImplement.Models
 			Status = Status
 		};
 
-        public PurchaseViewModel GetViewModel() => new()
+        public PurchaseViewModel GetViewModel => new()
         {
             Id = Id,
             DatePurchase = DatePurchase,
@@ -87,14 +89,48 @@ namespace DatabaseImplement.Models
             Status = model.Status
         };
 
-		public void Update(PurchaseBindingModel model, Purchase purchase)
+		public void Update(PurchaseBindingModel model)
 		{
 			if (model is null)
 			{
 				throw new ArgumentNullException("Update purchase: binding model is null");
 			}
 
-			DatePurchase = purchase.DatePurchase;
+			DatePurchase = model.DatePurchase;
+            UserId = model.UserId;
+            PurchaseProducts = model.PurchaseProducts;
+            Status = model.Status;
 		}
-	}
+        public void UpdateProducts(Database context, PurchaseBindingModel model)
+        {
+            var purchaseProducts = context.PurchaseProducts.Where(rec =>
+            rec.Id == model.Id).ToList();
+            if (purchaseProducts != null && purchaseProducts.Count > 0)
+            { // удалили те, которых нет в модели
+                context.PurchaseProducts.RemoveRange(purchaseProducts.Where(rec
+                => !model.PurchaseProducts.ContainsKey(rec.ProductId)));
+                context.SaveChanges();
+                // обновили количество у существующих записей
+                foreach (var updateProduct in purchaseProducts)
+                {
+                    updateProduct.Count = model.PurchaseProducts[updateProduct.ProductId].Item2;
+                    model.PurchaseProducts.Remove(updateProduct.ProductId);
+                }
+                context.SaveChanges();
+            }
+            var purchase = context.Purchases.First(x => x.Id == Id);
+            foreach (var pc in model.PurchaseProducts)
+            {
+                context.PurchaseProducts.Add(new PurchaseProducts
+                {
+                    Purchase = purchase,
+                    Product = context.Products.First(x => x.Id == pc.Key),
+                    Count = pc.Value.Item2
+                });
+                context.SaveChanges();
+            }
+            _purchaseProducts = null;
+        }
+
+    }
 }
diff --git a/DatabaseImplement/Models/Sell.cs b/DatabaseImplement/Models/Sell.cs
index 74a441e..e986b30 100644
--- a/DatabaseImplement/Models/Sell.cs
+++ b/DatabaseImplement/Models/Sell.cs
@@ -27,13 +27,13 @@ namespace DatabaseImplement.Models
 			};
 		}
 
-		public SellBindingModel GetBindingModel() => new()
+		public SellBindingModel GetBindingModel => new()
 		{
 			Id = Id,
 			DateSell = DateSell,
 			SupplyDocId = SupplyDocId,
 		};
-        public SellViewModel GetViewModel() => new()
+        public SellViewModel GetViewModel => new()
         {
             Id = Id,
             DateSell = DateSell,