diff --git a/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/AbstractCompany.cs b/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/AbstractCompany.cs
index 4ed36b2..12a1a16 100644
--- a/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/AbstractCompany.cs
+++ b/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/AbstractCompany.cs
@@ -42,7 +42,7 @@ public abstract class AbstractCompany
     /// <summary>
     /// Вычисление максимального кол-ва элементов, который можно разместить в окне
     /// </summary>
-    private int GetMaxCount => _pictureWidth * _pictureHeight / (_placeSizeWidth * _placeSizeHeight);
+    private int GetMaxCount => (_pictureWidth / (_placeSizeWidth + 75)) * (_pictureHeight / _placeSizeHeight);
 
     /// <summary>
     /// Конструктор
@@ -99,8 +99,16 @@ public abstract class AbstractCompany
         SetObjectsPosition();
         for (int i = 0; i < (_collection?.Count ?? 0); ++i)
         {
-            DrawingBus? obj = _collection?.Get(i);
-            obj?.DrawTrasnport(graphics);
+            try
+            {
+                DrawingBus? obj = _collection?.Get(i);
+                obj?.DrawTrasnport(graphics);
+            }
+            catch(Exception)
+            {
+                continue;
+            }
+
         }
 
         return bitmap;
diff --git a/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/BusStation.cs b/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/BusStation.cs
index cc974ed..3bf83db 100644
--- a/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/BusStation.cs
+++ b/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/BusStation.cs
@@ -54,8 +54,16 @@ public class BusStation : AbstractCompany
 
         for (int i = 0, coordinate_index = 0; i < _collection.Count; i++, coordinate_index += 2)
         {
-            _collection.Get(i)?.SetPictureSize(_pictureWidth, _pictureHeight);
-            _collection.Get(i)?.SetPosition(_arrayOfCoordinates[coordinate_index], _arrayOfCoordinates[coordinate_index + 1]);
+             try
+            {
+                _collection.Get(i)?.SetPictureSize(_pictureWidth, _pictureHeight);
+                _collection.Get(i)?.SetPosition(_arrayOfCoordinates[coordinate_index], _arrayOfCoordinates[coordinate_index + 1]);
+            }
+            catch (Exception) 
+            {
+                break;
+            }
+            
 
         }
     }
diff --git a/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/ListGenericObjects.cs b/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/ListGenericObjects.cs
index 3303953..d4ed6cc 100644
--- a/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/ListGenericObjects.cs
+++ b/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/ListGenericObjects.cs
@@ -1,4 +1,5 @@
-using System;
+using DoubleDeckerBus.Exceptions;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -38,7 +39,7 @@ public class ListGenericObjects<T> : ICollectionGenericObjects<T>
     {
         if (position < 0 || position >= Count)
         {
-            return null;
+            throw new PositionOutOfCollectionException(position);
         }
         return _collection[position];
     }
@@ -47,7 +48,7 @@ public class ListGenericObjects<T> : ICollectionGenericObjects<T>
     {
         if (Count >= _maxCount)
         {
-            return -1;
+            throw new CollectionOverflowException(Count);
         }
         _collection.Add(obj);
         return _collection.IndexOf(obj);
@@ -55,9 +56,14 @@ public class ListGenericObjects<T> : ICollectionGenericObjects<T>
 
     public int Insert(T obj, int position)
     {
-        if (Count >= _maxCount || position < 0 || position >= _maxCount)
+        if (position < 0 || position >= _maxCount)
         {
-            return -1;
+            throw new PositionOutOfCollectionException(position);
+        }
+
+        if (Count >= MaxCount)
+        {
+            throw new CollectionOverflowException(Count);
         }
 
         if (position > Count && position < _maxCount)
@@ -65,36 +71,16 @@ public class ListGenericObjects<T> : ICollectionGenericObjects<T>
             return Insert(obj);
         }
 
-        int copy_of_position = position - 1;
+        _collection.Insert(position, obj);
 
-        while (position < Count)
-        {
-            if (_collection[position] == null)
-            {
-                _collection.Insert(position, obj);
-                return position;
-            }
-            position++;
-        }
-
-        while (copy_of_position > 0)
-        {
-            if (_collection[copy_of_position] == null)
-            {
-                _collection.Insert(copy_of_position, obj);
-                return copy_of_position;
-            }
-            copy_of_position--;
-        }
-
-        return -1;
+        return position;
     }
 
     public T? Remove(int position)
     {
         if (position < 0 || position >= Count)
         {
-            return null;
+            throw new PositionOutOfCollectionException(position);
         }
 
         T? removed_object = Get(position);
diff --git a/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/MassiveGenericObjects.cs b/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/MassiveGenericObjects.cs
index 4a6444e..b5af1d8 100644
--- a/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/MassiveGenericObjects.cs
+++ b/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/MassiveGenericObjects.cs
@@ -1,4 +1,5 @@
-using System;
+using DoubleDeckerBus.Exceptions;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -52,25 +53,35 @@ public class MassiveGenericObjects<T> : ICollectionGenericObjects<T>
     {
         if (position < 0 || position >= Count)
         {
-            return null;
+            throw new PositionOutOfCollectionException(position);
+        }
+        if (_collection[position] == null)
+        {
+            throw new ObjectNotFoundException(position);
         }
         return _collection[position];
-
     }
 
     public int Insert(T obj)
     {
-        return Insert(obj, 0);
+        try
+        {
+            return Insert(obj, 0);
+        }
+        catch(CollectionOverflowException ex)
+        {
+            throw new CollectionOverflowException(ex.Message);
+        }
+        
     }
 
     public int Insert(T obj, int position)
     {
-
         if (position < 0 || position >= Count)
         {
-            return -1;
+            throw new PositionOutOfCollectionException(position);
         }
-
+        
         int copy_of_position = position - 1;
 
         while (position < Count)
@@ -92,7 +103,7 @@ public class MassiveGenericObjects<T> : ICollectionGenericObjects<T>
             copy_of_position--;
         }
 
-        return -1;
+        throw new CollectionOverflowException(Count);
 
     }
 
@@ -100,7 +111,11 @@ public class MassiveGenericObjects<T> : ICollectionGenericObjects<T>
     {
         if (position < 0 || position >= Count)
         {
-            return null;
+            throw new PositionOutOfCollectionException(position);
+        }
+        if (_collection[position] == null)
+        {
+            throw new ObjectNotFoundException(position);
         }
 
         T? removed_object = _collection[position];
diff --git a/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/StorageCollection.cs b/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/StorageCollection.cs
index 989b385..393f228 100644
--- a/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/StorageCollection.cs
+++ b/DoubleDeckerBus/DoubleDeckerBus/CollectionGenericObjects/StorageCollection.cs
@@ -1,4 +1,5 @@
 using DoubleDeckerBus.Drawnings;
+using DoubleDeckerBus.Exceptions;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -79,11 +80,11 @@ public class StorageCollection<T>
         }
     }
 
-    public bool SaveData(string filename)
+    public void SaveData(string filename)
     {   
         if (_storages.Count == 0)
         {
-            return false;
+            throw new ArgumentException("There are no collections to save");
         }
 
         if (File.Exists(filename))
@@ -127,26 +128,22 @@ public class StorageCollection<T>
                 sw.WriteLine(sb.ToString());
             }
         }
-
-        return true;
-
     }
 
-    public bool LoadData(string filename)
+    public void LoadData(string filename)
     {
         if (!File.Exists(filename))
         {
-            return false;
+            throw new FileNotFoundException("The file does not exist");
         }
 
-
         using (StreamReader sr = new(filename))
         {
             string? bufferLine = sr.ReadLine();
 
             if (bufferLine != _collectionKey)
             {
-                return false;
+                throw new ArgumentException("Invalid data in the file");
             }
 
             _storages.Clear();
@@ -165,7 +162,7 @@ public class StorageCollection<T>
 
                 if (collection == null)
                 {
-                    return false;
+                    throw new ArgumentNullException("Failed to create a collection"); 
                 }
 
                 collection.MaxCount = Convert.ToInt32(record[2]);
@@ -176,17 +173,20 @@ public class StorageCollection<T>
                 {
                     if (elem?.CreateDrawningCar() is T car)
                     {
-                        if (collection.Insert(car) == -1)
+                        try
                         {
-                            return false;
+                            collection.Insert(car);
                         }
+                        catch(CollectionOverflowException ex)
+                        {
+                            throw new CollectionOverflowException("The collection is overflowing", ex);
+                        }
+                        
                     }
                 }
                 _storages.Add(record[0], collection);
             }
-            return true;
-        }
-           
+        } 
     }
 
     /// <summary>
diff --git a/DoubleDeckerBus/DoubleDeckerBus/DoubleDeckerBus.csproj b/DoubleDeckerBus/DoubleDeckerBus/DoubleDeckerBus.csproj
index 244387d..dd64528 100644
--- a/DoubleDeckerBus/DoubleDeckerBus/DoubleDeckerBus.csproj
+++ b/DoubleDeckerBus/DoubleDeckerBus/DoubleDeckerBus.csproj
@@ -8,6 +8,17 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="7.0.0" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="7.0.0" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="8.0.1" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="7.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Primitives" Version="7.0.0" />
+    <PackageReference Include="Serilog.AspNetCore" Version="7.0.0" />
+    <PackageReference Include="Serilog.Extensions.Logging" Version="7.0.0" />
+    <PackageReference Include="Serilog.Settings.Configuration" Version="7.0.0" />
+  </ItemGroup>
+
   <ItemGroup>
     <Compile Update="Properties\Resources.Designer.cs">
       <DesignTime>True</DesignTime>
@@ -23,4 +34,12 @@
     </EmbeddedResource>
   </ItemGroup>
 
+  <ItemGroup>
+    <None Update="serilog.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+  <ProjectExtensions><VisualStudio><UserProperties /></VisualStudio></ProjectExtensions>
+
 </Project>
\ No newline at end of file
diff --git a/DoubleDeckerBus/DoubleDeckerBus/Exceptions/CollectionOverflowException.cs b/DoubleDeckerBus/DoubleDeckerBus/Exceptions/CollectionOverflowException.cs
new file mode 100644
index 0000000..4fde802
--- /dev/null
+++ b/DoubleDeckerBus/DoubleDeckerBus/Exceptions/CollectionOverflowException.cs
@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DoubleDeckerBus.Exceptions;
+
+[Serializable]
+internal class CollectionOverflowException : ApplicationException
+{
+    public CollectionOverflowException(int count) : base("The allowed amount in the collection has been exceeded: " + count) { }
+
+    public CollectionOverflowException() : base() { }
+
+    public CollectionOverflowException(string message) : base(message) { }
+
+    public CollectionOverflowException(string message, Exception exception) : base(message, exception) { }
+
+    protected CollectionOverflowException(SerializationInfo info, StreamingContext contex) : base(info, contex) { }
+}
diff --git a/DoubleDeckerBus/DoubleDeckerBus/Exceptions/ObjectNotFoundException.cs b/DoubleDeckerBus/DoubleDeckerBus/Exceptions/ObjectNotFoundException.cs
new file mode 100644
index 0000000..1840124
--- /dev/null
+++ b/DoubleDeckerBus/DoubleDeckerBus/Exceptions/ObjectNotFoundException.cs
@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DoubleDeckerBus.Exceptions;
+
+[Serializable]
+internal class ObjectNotFoundException : ApplicationException
+{
+    public ObjectNotFoundException(int i) : base("The object was not found by position " + i) { }
+
+    public ObjectNotFoundException() : base() { }
+
+    public ObjectNotFoundException(string message) : base(message) { }
+
+    public ObjectNotFoundException(string message, Exception exception) : base(message, exception) { }
+
+    protected ObjectNotFoundException(SerializationInfo info, StreamingContext contex) : base(info, contex) { }
+}
diff --git a/DoubleDeckerBus/DoubleDeckerBus/Exceptions/PositionOutOfCollectionException.cs b/DoubleDeckerBus/DoubleDeckerBus/Exceptions/PositionOutOfCollectionException.cs
new file mode 100644
index 0000000..44e3ef2
--- /dev/null
+++ b/DoubleDeckerBus/DoubleDeckerBus/Exceptions/PositionOutOfCollectionException.cs
@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DoubleDeckerBus.Exceptions;
+
+[Serializable]
+internal class PositionOutOfCollectionException : ApplicationException
+{
+    public PositionOutOfCollectionException(int i) : base("Going beyond the boundaries of the collection. Position: " + i) { }
+
+    public PositionOutOfCollectionException() : base() { }
+
+    public PositionOutOfCollectionException(string message) : base(message) { }
+
+    public PositionOutOfCollectionException(string message, Exception exception) : base(message, exception) { }
+
+    protected PositionOutOfCollectionException(SerializationInfo info, StreamingContext contex) : base(info, contex) { }
+}
diff --git a/DoubleDeckerBus/DoubleDeckerBus/FormBusCollection.cs b/DoubleDeckerBus/DoubleDeckerBus/FormBusCollection.cs
index e96be51..a6f9717 100644
--- a/DoubleDeckerBus/DoubleDeckerBus/FormBusCollection.cs
+++ b/DoubleDeckerBus/DoubleDeckerBus/FormBusCollection.cs
@@ -1,5 +1,6 @@
 using DoubleDeckerBus.CollectionGenericObjects;
 using DoubleDeckerBus.Drawnings;
+using Microsoft.Extensions.Logging;
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
@@ -18,13 +19,16 @@ public partial class FormBusCollection : Form
 
     private readonly StorageCollection<DrawingBus> _storageCollection;
 
+    private readonly ILogger _logger;
+
     /// <summary>
     /// Конструктор
     /// </summary>
-    public FormBusCollection()
+    public FormBusCollection(ILogger<FormBusCollection> logger)
     {
         InitializeComponent();
         _storageCollection = new();
+        _logger = logger;
     }
 
     private void comboBoxSelectCompany_SelectedIndexChanged(object sender, EventArgs e)
@@ -46,14 +50,20 @@ public partial class FormBusCollection : Form
             return;
         }
 
-        if ((_company + bus) != -1)
+        try
         {
-            MessageBox.Show("Object added");
-            pictureBox.Image = _company.Show();
+            if ((_company + bus) != -1)
+            {
+                MessageBox.Show("Object added");
+                pictureBox.Image = _company.Show();
+                _logger.LogInformation("Object added: {obj}", bus.GetDataForSave());
+            }
+              
         }
-        else
+        catch (Exception ex)
         {
-            MessageBox.Show("Failed to add object");
+            MessageBox.Show(ex.Message);
+            _logger.LogError("Failed to add object", ex.Message);
         }
     }
 
@@ -72,16 +82,19 @@ public partial class FormBusCollection : Form
         }
 
         int pos = Convert.ToInt32(maskedTextBox.Text);
-        if (_company - pos != null)
+
+        try
         {
+            DrawingBus? removedObj = _company - pos;
             MessageBox.Show("Object removed");
             pictureBox.Image = _company.Show();
+            _logger.LogInformation("Object removed {obj}", removedObj?.GetDataForSave());
         }
-        else
+        catch(Exception ex) 
         {
-            MessageBox.Show("Failed to remove object");
+            MessageBox.Show(ex.Message);
+            _logger.LogError("Failed to remove object", ex.Message);
         }
-
     }
 
     private void ButtonGoToCheck_Click(object sender, EventArgs e)
@@ -130,6 +143,7 @@ public partial class FormBusCollection : Form
         if (string.IsNullOrEmpty(textBoxCollectionName.Text) || (!radioButtonArray.Checked && !radioButtonList.Checked))
         {
             MessageBox.Show("Not all data is filled in", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            _logger.LogInformation("Failed to add collection: not all data is filled in");
             return;
         }
 
@@ -144,6 +158,7 @@ public partial class FormBusCollection : Form
         }
 
         _storageCollection.AddCollection(textBoxCollectionName.Text, collectionType);
+        _logger.LogInformation("Added a collection of type {type} with the name {name}", collectionType, textBoxCollectionName.Text);
         RefreshListBoxItems();
     }
 
@@ -165,6 +180,7 @@ public partial class FormBusCollection : Form
         if (listBoxCollectionItems.SelectedIndex < 0)
         {
             MessageBox.Show("No collection selected", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            _logger.LogInformation("Failed to remove collection: no collection selected");
             return;
         }
 
@@ -175,6 +191,7 @@ public partial class FormBusCollection : Form
             if (result == DialogResult.Yes)
             {
                 _storageCollection.DelCollection(listBoxCollectionItems.Text);
+                _logger.LogInformation("Removed a collection {name}: ", listBoxCollectionItems.SelectedItem?.ToString());
                 RefreshListBoxItems();
             }
             else
@@ -211,31 +228,37 @@ public partial class FormBusCollection : Form
     {
         if (saveFileDialog.ShowDialog() == DialogResult.OK)
         {
-            if (_storageCollection.SaveData(saveFileDialog.FileName))
+            try
             {
+                _storageCollection.SaveData(saveFileDialog.FileName);
                 MessageBox.Show("Save succeeded", "Result", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                _logger.LogInformation("Saving to the file: {filename}", saveFileDialog.FileName);
             }
-            else
+            catch(Exception ex) 
             {
                 MessageBox.Show("Unable to save", "Result", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                _logger.LogError("Error: {Message}", ex.Message);
             }
         }
-
     }
 
     private void LoadToolStripMenuItem_Click(object sender, EventArgs e)
     {
         if (openFileDialog.ShowDialog() == DialogResult.OK)
         {
-            if (_storageCollection.LoadData(openFileDialog.FileName))
+            try
             {
+                _storageCollection.LoadData(openFileDialog.FileName);
                 MessageBox.Show("Load succeeded", "Resilt", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                _logger.LogInformation("Loading from the file: {filename}", openFileDialog.FileName);
                 RefreshListBoxItems();
             }
-            else
+            catch(Exception ex)
             {
                 MessageBox.Show("Unable to load", "Result", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                _logger.LogError("Error: {Message}", ex.Message);
             }
+            
         }
 
     }
diff --git a/DoubleDeckerBus/DoubleDeckerBus/Program.cs b/DoubleDeckerBus/DoubleDeckerBus/Program.cs
index 8dd5e23..12c7e66 100644
--- a/DoubleDeckerBus/DoubleDeckerBus/Program.cs
+++ b/DoubleDeckerBus/DoubleDeckerBus/Program.cs
@@ -1,3 +1,8 @@
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using Serilog;
+
 namespace DoubleDeckerBus
 {
     internal static class Program
@@ -11,7 +16,23 @@ namespace DoubleDeckerBus
             // To customize application configuration such as set high DPI settings or default font,
             // see https://aka.ms/applicationconfiguration.
             ApplicationConfiguration.Initialize();
-            Application.Run(new FormBusCollection());
+
+            ServiceCollection services = new();
+            ConfigureServices(services);
+            using ServiceProvider servicesProvider = services.BuildServiceProvider();
+            Application.Run(servicesProvider.GetRequiredService<FormBusCollection>());
+        }
+
+        private static void ConfigureServices(ServiceCollection services)
+        {
+
+            services.AddSingleton<FormBusCollection>()
+            .AddLogging(option =>
+            {
+                option.SetMinimumLevel(LogLevel.Information);
+                option.AddSerilog(new LoggerConfiguration().ReadFrom.Configuration(new ConfigurationBuilder().
+                    SetBasePath(Directory.GetCurrentDirectory()).AddJsonFile("serilog.json").Build()).CreateLogger());
+            });
         }
     }
 }
\ No newline at end of file
diff --git a/DoubleDeckerBus/DoubleDeckerBus/serilog.json b/DoubleDeckerBus/DoubleDeckerBus/serilog.json
new file mode 100644
index 0000000..66651f8
--- /dev/null
+++ b/DoubleDeckerBus/DoubleDeckerBus/serilog.json
@@ -0,0 +1,15 @@
+{
+  "Serilog": {
+    "Using": [ "Serilog.Sinks.File" ],
+    "MinimumLevel": "Debug",
+    "WriteTo": [
+      {
+        "Name": "File",
+        "Args": { "path": "MyLog.log" }
+      }
+    ],
+    "Properties": {
+      "Applicatoin": "Sample"
+    }
+  }
+}
\ No newline at end of file