По итогам дня, остается сделать - Приявязать БД, Сделать БД, Реализовать TourRepository.

project/ProjectTourAgency/Implementations/TourRepository.cs

@@ -1,7 +1,10 @@
-using ProjectTourAgency.Enities;
+using Microsoft.Extensions.Logging;
+using Newtonsoft.Json;
+using ProjectTourAgency.Enities;
 using ProjectTourAgency.Repositories;
 using System;
 using System.Collections.Generic;
+using System.Data.SqlClient;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -10,9 +13,31 @@ namespace ProjectTourAgency.Implementations;
 
 public class TourRepository : ITourRepository
 {
+    private readonly IConnectionString _connectionString;
+
+    private readonly ILogger<TourRepository> _logger;
+    public TourRepository(IConnectionString connectionString, ILogger<TourRepository> logger)
+    {
+        _connectionString = connectionString;
+        _logger = logger;
+    }
     public void CreateTour(Tour tour)
     {
+        _logger.LogInformation("Добавление объекта");
+        _logger.LogDebug("Объект: {json}", JsonConvert.SerializeObject(tour));
 
+        try
+        {
+            using var connection = new SqlConnection(_connectionString.ConnectionString);
+            connection.Open();
+            using var transaction = connection.BeginTransaction();
+            var queryInsert;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при добавлении объекта");
+            throw;
+        }
     }
 
     public void DeleteTour(int id)