Ну, типо работает (пока что)

BankYouBankrupt/BankYouBankruptDatabaseImplement/Implements/AccountStorage.cs

@@ -25,17 +25,39 @@ namespace BankYouBankruptDatabaseImplement.Implements
 
 		public List<AccountViewModel> GetFilteredList(AccountSearchModel model)
 		{
-			if (string.IsNullOrEmpty(model.AccountNumber))
-			{
-				return new();
-			}
-
 			using var context = new BankYouBancruptDatabase();
 
-			return context.Accounts
+			if (!string.IsNullOrEmpty(model.AccountNumber))
+			{
+				return context.Accounts
+					.Include(x => x.Client)
 					.Where(x => x.AccountNumber.Contains(model.AccountNumber))
 					.Select(x => x.GetViewModel)
 					.ToList();
+			}
+
+			if (model.CashierId.HasValue)
+			{
+				return context.Accounts
+					.Include(x => x.Client)
+					.Where(x => x.CashierId == model.CashierId)
+					.Select(x => x.GetViewModel)
+					.ToList();
+			}
+
+			if (model.ClientId.HasValue)
+			{
+				return context.Accounts
+					.Include(x => x.Client)
+					.Where(x => x.ClientId == model.ClientId)
+					.Select(x => x.GetViewModel)
+					.ToList();
+			}
+
+			return context.Accounts
+					.Include(x => x.Client)
+					.Select(x => x.GetViewModel)
+					.ToList();
 		}
 
 		public AccountViewModel? GetElement(AccountSearchModel model)

BankYouBankrupt/BankYouBankruptDatabaseImplement/Implements/CardStorage.cs

@@ -3,6 +3,7 @@ using BankYouBankruptContracts.SearchModels;
 using BankYouBankruptContracts.StoragesContracts;
 using BankYouBankruptContracts.ViewModels;
 using BankYouBankruptDatabaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -43,16 +44,29 @@ namespace BankYouBankruptDatabaseImplement.Implements
 
         public List<CardViewModel> GetFilteredList(CardSearchModel model)
         {
-            if (string.IsNullOrEmpty(model.Number))
-            {
-                return new();
-            }
-
             using var context = new BankYouBancruptDatabase();
 
-            return context.Cards
+            if (!string.IsNullOrEmpty(model.Number))
-                    .Where(x => x.Number.Contains(model.Number))
+            {
-                    .Select(x => x.GetViewModel)
+				return context.Cards
+                    .Include(x => x.Client)
+					.Where(x => x.Number.Contains(model.Number))
+					.Select(x => x.GetViewModel)
+					.ToList();
+			}
+
+			if (model.ClientID.HasValue)
+			{
+				return context.Cards
+					.Include(x => x.Client)
+					.Where(x => x.ClientID == model.ClientID)
+					.Select(x => x.GetViewModel)
+					.ToList();
+			}
+
+			return context.Cards
+				    .Include(x => x.Client)
+					.Select(x => x.GetViewModel)
                     .ToList();
         }
 

BankYouBankrupt/BankYouBankruptDatabaseImplement/Models/Account.cs

@@ -58,7 +58,6 @@ namespace BankYouBankruptDatabaseImplement.Models
 			{
 				Id = model.Id,
 				ClientId = model.ClientId,
-				Client = context.Clients.First(x => x.Id == model.ClientId),
 				PasswordAccount = model.PasswordAccount,
 				Balance = model.Balance,
 				DateOpen = model.DateOpen,
@@ -78,6 +77,8 @@ namespace BankYouBankruptDatabaseImplement.Models
 			Id = Id,
 			CashierId = CashierId,
 			ClientId = ClientId,
+			Name = Client.Name,
+			Patronymic = Client.Patronymic,
 			AccountNumber = AccountNumber,
 			Balance = Balance,
 			PasswordAccount = PasswordAccount,

BankYouBankrupt/BankYouBankruptDatabaseImplement/Models/Card.cs

@@ -18,7 +18,7 @@ namespace BankYouBankruptDatabaseImplement.Models
         [Required]
         public int ClientID { get; set; }
 
-        public virtual Client Client { get; set; } = new();
+        public virtual Client Client { get; set; }
 
         [Required]
         public int AccountId { get; set; }
@@ -56,7 +56,6 @@ namespace BankYouBankruptDatabaseImplement.Models
                 Id = model.Id,
                 AccountId = model.AccountId,
                 ClientID = model.ClientID,
-                Client = context.Clients.First(x => x.Id == model.ClientID),
                 Number = model.Number,
                 Period = model.Period,
                 CVC = model.CVC