Доделали все в коде, остается лишь подключить базу данных

project/ProjectTourAgency/Implementations/TourRepository.cs

@@ -1,4 +1,5 @@
-using Microsoft.Extensions.Logging;
+using Dapper;
+using Microsoft.Extensions.Logging;
 using Newtonsoft.Json;
 using ProjectTourAgency.Enities;
 using ProjectTourAgency.Repositories;
@@ -31,7 +32,20 @@ public class TourRepository : ITourRepository
             using var connection = new SqlConnection(_connectionString.ConnectionString);
             connection.Open();
             using var transaction = connection.BeginTransaction();
-            var queryInsert;
+            var queryInsert = @"
+INSERT INTO Tour(EmployeeId, RouteId, DepartureDate, ClientTours)
+VALUES (@EmployeeId, @RouteId, @DepartureDate, @ClientTours)
+SELECT MAX(Id) FROM Tour
+";
+            var tourID = connection.QueryFirst<int>(queryInsert, tour, transaction);
+            var querySubInsert = @"
+INSERT INTO ClientTour(ClientId, TourId, Cost)
+VALUES (@ClientId, @TourId, @Cost)";
+            foreach (var elem in tour.ClientTours)
+            {
+                connection.Execute(querySubInsert, new { tourID, elem.ClientId, elem.Cost });
+            }
+            transaction.Commit();
         }
         catch (Exception ex)
         {
@@ -42,19 +56,40 @@ public class TourRepository : ITourRepository
 
     public void DeleteTour(int id)
     {
+        _logger.LogInformation("Удаление объекта");
+        _logger.LogDebug("Объекьт: {id}", id);
+        try
+        {
+            using var connection = new SqlConnection(_connectionString.ConnectionString);
+            var queryDelete = @"
+DELETE FROM Tour
+WHERE Id = @id";
+            connection.Execute(queryDelete, new { id });
+        }
+        catch (Exception ex) 
+        {
+            _logger.LogError(ex, "Ошибка при удалении объекта");
+            throw;
+        }
     }
 
-    public Tour ReadTourById(int id)
-    {
-        return Tour.CreateEntity(0,0, 0,DateTime.Now, []);
-    }
 
     public IEnumerable<Tour> ReadTours()
     {
-        return [];
-    }
+        _logger.LogInformation("Получение всех объектов");
+        try
+        {
+            using var connection = new SqlConnection(_connectionString.ConnectionString);
+            var querySelect = @"SELECT * FROM Tour";
+            var tour = connection.Query<Tour>(querySelect);
+            _logger.LogDebug("Получение объектов {json}", JsonConvert.SerializeObject(tour));
+            return tour;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Ошибка при чтении");
+            throw;
+        }
 
-    public void UpdateTour(Tour tour)
-    {
     }
 }

project/ProjectTourAgency/Repositories/ITourRepositiry.cs

@@ -11,11 +11,9 @@ public interface ITourRepository
 {
     IEnumerable<Tour> ReadTours();
 
-    Tour ReadTourById(int id);
 
     void CreateTour(Tour tour);
 
-    void UpdateTour(Tour tour);
 
     void DeleteTour(int id);
 }