files and streams

ProjectCruiser/CollectionGenericObj/AbstractCompany.cs

@@ -26,7 +26,7 @@ public abstract class AbstractCompany
         _pictureWidth = picWidth;
         _pictureHeight = picHeight;
         _collection = collection;
-        _collection.SetMaxCount = GetMaxCount;
+        _collection.MaxCount = GetMaxCount;
     }
 
     // Перегрузка оператора сложения для класса

ProjectCruiser/CollectionGenericObj/ArrayGenObj.cs

@@ -1,24 +1,32 @@
-namespace ProjectCruiser.CollectionGenericObj;
+
+namespace ProjectCruiser.CollectionGenericObj;
 
 public class ArrayGenObj<T> : ICollectionGenObj<T>
     where T : class
 {
     // Массив объектов, которые храним
     private T?[] _collection;
-    public int Count => _collection.Length;
-    public int SetMaxCount
+
+    // Максимально допустимое число объектов в массиве
+    private int _maxCount;
+    public int Count => _collection.Count(s => s != null);
+
+    public int MaxCount
     {
+        get { return _maxCount; }
         set
         {
             if (value > 0)
             {
-                if (_collection.Length > 0) Array.Resize(ref _collection, value);
-                else _collection = new T?[value];
+                if (_collection.Length == 0) _collection = new T?[value];
+                else Array.Resize(ref _collection, value);
+
+                _maxCount = value;
             }
         }
     }
 
-    // public int SetMaxCount { set { if (value > 0) { _collection = new T?[value]; } } }
+    public CollectionType GetCollectionType => CollectionType.Array;
 
     public ArrayGenObj()
     {
@@ -26,7 +34,6 @@ public class ArrayGenObj<T> : ICollectionGenObj<T>
     }
 
     // methods :
-
     public T? GetItem(int index)
     {
         if (index > Count || index < 0)
@@ -38,8 +45,13 @@ public class ArrayGenObj<T> : ICollectionGenObj<T>
 
     public int Insert(T? item)
     {
-        // any empty place
-        for (int i = 0; i < Count; i++)
+        if (Count >= _maxCount || item == null)
+        {
+            return -1;
+        }
+
+        // any empty place -> fill immediately
+        for (int i = 0; i < _collection.Length; i++)
         {
             if (_collection[i] == null)
             {
@@ -47,20 +59,25 @@ public class ArrayGenObj<T> : ICollectionGenObj<T>
                 return i;
             }
         }
-        return -1;
+        return Count;
     }
 
     public int Insert(T? item, int index)
     {
+        if (index >= _maxCount || Count >= _maxCount ||
+            index < 0 || _collection[index] != null
+            || item == null)
+        {
+            return -1;
+        }
+
         if (_collection[index] == null)
         {
             _collection[index] = item;
             return index;
         }
 
-        else
-        {
-            int min_diff = 100, min_index = 100;
+        int min_diff = 100, firstNullIndex = 100;
 
         for (int i = 0; i < Count; i++)
         {
@@ -68,27 +85,33 @@ public class ArrayGenObj<T> : ICollectionGenObj<T>
                 && min_diff > Math.Abs(index - i))
             {
                 min_diff = Math.Abs(index - i);
-                    min_index = i;
+                firstNullIndex = i;
             }
         }
 
-            _collection[min_index] = item;
-            return min_index;
-        }
-
-        return -1;
+        _collection[firstNullIndex] = item;
+        return firstNullIndex;
     }
 
     public T? Remove(int index)
     {
-        T? item;
-        if (index < Count && index >= 0)
+        if (index >= Count || index < 0)
+        // on the other positions items don't exist
         {
-            item = _collection[index];
+            return null;
+        }
+
+        T? item = _collection[index];
         _collection[index] = null;
         return item;
     }
-        return null;
+
+    public IEnumerable<T?> GetItems()
+    {
+        for (int i = 0; i < MaxCount; ++i)
+        { 
+            yield return _collection[i];
+        }
     }
 }
 

ProjectCruiser/CollectionGenericObj/ICollectionGenObj.cs

@@ -6,7 +6,7 @@ public interface ICollectionGenObj<T> where T : class
     int Count { get; }
 
     // Установка max кол-ва элементов
-    int SetMaxCount { set; }
+    int MaxCount { set; get; }
 
     /// Добавление объекта в коллекцию
     /// <param name="obj">Добавляемый объект</param>
@@ -21,4 +21,10 @@ public interface ICollectionGenObj<T> where T : class
 
     // Получение объекта по позиции
     T? GetItem(int position);
+
+    // Получение типа коллекции
+    CollectionType GetCollectionType { get; }
+
+    // Получение объектов коллекции по одному
+    IEnumerable<T?> GetItems();
 }

ProjectCruiser/CollectionGenericObj/ListGenObj.cs

@@ -1,4 +1,6 @@
 using System;
+using System.Collections;
+using System.Collections.Generic;
 using System.Reflection;
 
 namespace ProjectCruiser.CollectionGenericObj;
@@ -8,13 +10,28 @@ public class ListGenObj<T> : ICollectionGenObj<T>
     where T : class
 {
     // Список объектов, которые храним
-    private readonly List<T?> _collection;
+    private List<T?> _collection;
 
     // Максимально допустимое число объектов в списке
     private int _maxCount;
     public int Count => _collection.Count;
 
-    public int SetMaxCount { set { if (value > 0) { _maxCount = value; } } }
+    public int MaxCount
+    {
+        get { return _maxCount; }
+        set
+        {
+            if (value > 0)
+            {
+                if (_collection.Count == 0) _collection = new List<T>(value);
+                else _collection.Capacity = value; // instead of resizing
+
+                _maxCount = value;
+            }
+        }
+    }
+
+    public CollectionType GetCollectionType => CollectionType.List;
 
     public ListGenObj()
     {
@@ -31,7 +48,7 @@ public class ListGenObj<T> : ICollectionGenObj<T>
         return _collection[position];
     }
 
-    public int Insert(T obj)
+    public int Insert(T? obj)
     {
         if (Count >= _maxCount || obj == null)
         {
@@ -42,7 +59,7 @@ public class ListGenObj<T> : ICollectionGenObj<T>
         return Count;
     }
 
-    public int Insert(T obj, int position)
+    public int Insert(T? obj, int position)
     {
         if (position >= _maxCount || Count >= _maxCount ||
             position < 0 || _collection[position] != null
@@ -67,4 +84,12 @@ public class ListGenObj<T> : ICollectionGenObj<T>
         _collection.RemoveAt(position);
         return item;
     }
+
+    public IEnumerable<T?> GetItems()
+    {
+        for (int i = 0; i < _collection.Count; ++i)
+        {
+            yield return _collection[i];
+        }
+    }
 }

ProjectCruiser/CollectionGenericObj/StorageCollection.cs

@@ -1,8 +1,19 @@
-namespace ProjectCruiser.CollectionGenericObj;
+using System.Text;
+using ProjectCruiser.DrawningSamples;
+
+namespace ProjectCruiser.CollectionGenericObj;
 
 public class StorageCollection<T>
-where T : class
+    where T : DrawningBase // class
 {
+    // Разделитель для записи ключа и значения элемента словаря
+    private readonly string _separatorForKeyValue = "|";
+    // Разделитель для записей коллекции данных в файл
+    private readonly string _separatorItems = ";";
+
+    // Ключевое слово, с которого должен начинаться файл
+    private readonly string _collectionKey = "CollectionsStorage";
+
     // Словарь (хранилище) с коллекциями < name, type (class) >
     readonly Dictionary<string, ICollectionGenObj<T>> _storages;
 
@@ -14,9 +25,7 @@ where T : class
         _storages = new Dictionary<string, ICollectionGenObj<T>>();
     }
 
-    /// Добавление коллекции в хранилище
-    /// <param name="name">Название коллекции</param>
-    /// <param name="collectionType">тип коллекции</param>
+    // Добавление коллекции в хранилище
     public void AddCollection(string name, CollectionType collType)
     {
         if (name == null || _storages.ContainsKey(name)
@@ -25,27 +34,165 @@ where T : class
             return;
         }
 
-        switch (collType)
-        {
-            case CollectionType.List: _storages.Add(name, new ListGenObj<T>()); break;
-            // _storages[name] = new ListGenericObjects<T>(); break; [*]
-
-            case CollectionType.Array: _storages.Add(name, new ArrayGenObj<T>()); break;
-        }
+        ICollectionGenObj<T> collection = CreateCollection(collType);
+        _storages.Add(name, collection);
     }
 
-    /// Удаление коллекции ( по ключу-строке - её имени )
-    /// <param name="name">Название коллекции</param>
+    // Удаление коллекции ( по ключу-строке - её имени )
     public void DelCollection(string name)
     {
         if (_storages.ContainsKey(name)) _storages.Remove(name);
         return;
     }
 
-    /// Доступ к коллекции ( по ключу-строке - её имени )
+    // Доступ к коллекции ( по ключу-строке - её имени ) - индексатор [!!!]
     public ICollectionGenObj<T>? this[string name]
     {
         get => _storages.ContainsKey(name) ? _storages[name] : null;
     }
+
+    /// Сохранение информации по автомобилям в хранилище в файл
+    /// <param name="filename">Путь и имя файла</param>
+    /// <returns>true - сохранение прошло успешно,
+    /// false - ошибка при сохранении данных</returns>
+    public bool SaveData(string filename)
+    {
+        if (_storages.Count == 0) { return false; }
+        if (File.Exists(filename)) { File.Delete(filename); }
+
+        StringBuilder sb = new();
+
+        sb.Append(_collectionKey); // const
+
+        foreach (KeyValuePair<string, ICollectionGenObj<T>> pair in _storages)
+        {
+            sb.Append(Environment.NewLine); // не сохраняем пустые коллекции
+            if (pair.Value.Count == 0) { continue; }
+
+            sb.Append(pair.Key);
+            sb.Append(_separatorForKeyValue);
+            sb.Append(pair.Value.GetCollectionType);
+            sb.Append(_separatorForKeyValue);
+            sb.Append(pair.Value.MaxCount);
+            sb.Append(_separatorForKeyValue);
+
+            foreach (T? item in pair.Value.GetItems())
+            {
+                string data = item?.GetDataForSave() ?? string.Empty;
+
+                /*
+                string n = item.GetType().Name;
+                string data = null;
+
+                if (n != null && n == "DrawningCruiser")
+                {
+                    data = ExtentionDrShip.GetDataForSave(item);
+                }
+                else if (n != null && n == "DrawningBase")
+                {
+                    data = ExtentionDrShip.GetDataForSave(item);
+                }
+                */
+
+                if (string.IsNullOrEmpty(data))
+                {
+                    continue;
+                }
+
+                sb.Append(data);
+                sb.Append(_separatorItems);
+            }
+        }
+
+        using FileStream fs = new(filename, FileMode.Create);
+        byte[] info = new UTF8Encoding(true).GetBytes(sb.ToString());
+        fs.Write(info, 0, info.Length);
+        return true;
+    }
+
+    // Создание коллекции по типу
+    private static ICollectionGenObj<T>? CreateCollection(CollectionType collectionType)
+    {
+        return collectionType switch
+        {
+            CollectionType.Array => new ArrayGenObj<T>(),
+            CollectionType.List => new ListGenObj<T>(),
+            _ => null,
+        };
+    }
+
+    // Загрузка информации по кораблям в хранилище из файла
+    public bool LoadData(string filename)
+    {
+        if (!File.Exists(filename))
+        {
+            return false;
+        }
+
+        string bufferTextFromFile = "";
+
+        using (FileStream fs = new(filename, FileMode.Open))
+        {
+            byte[] b = new byte[fs.Length];
+            UTF8Encoding temp = new(true);
+            while (fs.Read(b, 0, b.Length) > 0)
+            {
+                bufferTextFromFile += temp.GetString(b);
+            }
+        }
+
+        string[] strs = bufferTextFromFile.Split(
+            new char[] { '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries);
+
+        if (strs == null || strs.Length == 0)
+        {
+            return false;
+        }
+        if (!strs[0].Equals(_collectionKey))
+        {
+            //если нет такой записи, то это не те данные
+            return false;
+        }
+
+        string[] companies = new string[strs.Length - 1];
+        for (int k = 1; k < strs.Length; k++)
+        {
+            companies[k - 1] = strs[k];
+        }
+
+        _storages.Clear();
+        foreach (string data in companies)
+        {
+            string[] record = data.Split(_separatorForKeyValue, StringSplitOptions.RemoveEmptyEntries);
+            if (record.Length != 4) // >
+                // key | collType | maxcount | all next inf > 4
+            {
+                continue;
+            }
+            CollectionType collectionType = (CollectionType)Enum.Parse(typeof(CollectionType), record[1]);
+            ICollectionGenObj<T>? collection = StorageCollection<T>.CreateCollection(collectionType);
+            if (collection == null)
+            {
+                return false;
+            }
+
+            collection.MaxCount = Convert.ToInt32(record[2]);
+            string[] set = record[3].Split(_separatorItems,
+            StringSplitOptions.RemoveEmptyEntries);
+
+            foreach (string elem in set)
+            {
+                if (elem?.CreateDrawningCar() is T ship)
+                {
+                    if (collection.Insert(ship) == -1)
+                    {
+                        return false;
+                    }
+                }
+            }
+            _storages.Add(record[0], collection);
+        }
+        return true;
+    }
 }
 

ProjectCruiser/DrawningSamples/DrawningBase.cs

@@ -14,9 +14,9 @@ public class DrawningBase
     private readonly int _drawningHeight = 42; // Высота прорисовки автомобиля
 
     // Инициализация свойств (теперь через конструктор)
-    public DrawningBase(int speed, double weight, Color bodyColor) : this()
+    public DrawningBase(EntityBase ship) : this()
     {
-        EntityTransport = new EntityBase(speed, weight, bodyColor);
+        EntityTransport = ship;
     }
 
     private DrawningBase()

ProjectCruiser/DrawningSamples/DrawningCruiser.cs

@@ -5,11 +5,9 @@ namespace ProjectCruiser.DrawningSamples;
 public class DrawningCruiser : DrawningBase
 {
     // Инициализация свойств (все параметры класса (сущности))
-    public DrawningCruiser(int speed, double weight, Color bodyColor,
-        Color additionalColor, bool pad, bool hangars) : base(302, 42)
+    public DrawningCruiser(EntityCruiser ship) : base((EntityBase)ship)
     {
-        EntityTransport = new EntityCruiser(speed, weight,
-            bodyColor, additionalColor, pad, hangars);
+        EntityTransport = ship;
     }
 
     public override void DrawTransport(Graphics g)

ProjectCruiser/DrawningSamples/ExtentionDrShip.cs

@@ -0,0 +1,41 @@
+using ProjectCruiser.Entities;
+namespace ProjectCruiser.DrawningSamples;
+public static class ExtentionDrShip
+{
+    // Разделитель для записи информации по объекту в файл
+    private static readonly string _separatorForObject = ":";
+
+    // Создание объекта из строки
+    public static DrawningBase? CreateDrawningCar(this string info)
+    {
+        string[] strs = info.Split(_separatorForObject);
+
+        EntityBase? ship = EntityCruiser.CreateEntity(strs);
+        if (ship != null)
+        {
+            return new DrawningCruiser((EntityCruiser)ship);
+        }
+
+        ship = EntityBase.CreateEntity(strs);
+        if (ship != null)
+        {
+            return new DrawningBase(ship);
+        }
+
+        return null;
+    }
+
+    // Получение данных для сохранения в файл - - - - - - -
+    public static string GetDataForSave(this DrawningBase drShip)
+        // метод расширения за счёт ключевого слова 'this'
+        // вызов метода достигается не через имя класса,
+        // а при вызове у объекта типа DrawningBase [*]
+    {
+        string[]? array = drShip?.EntityTransport?.GetStringRepresentation();
+        if (array == null)
+        {
+            return string.Empty;
+        }
+        return string.Join(_separatorForObject, array);
+    }
+}

ProjectCruiser/EditorForm3.cs

@@ -63,12 +63,14 @@ public partial class EditorForm3 : Form
         switch (e.Data?.GetData(DataFormats.Text)?.ToString())
         {
             case "BaseLabel":
-                _cruiser = new DrawningBase((int)SpeedN.Value, (double)WeightN.Value, Color.White);
+                EntityBase ship = new EntityBase((int)SpeedN.Value, (double)WeightN.Value, Color.White);
+                _cruiser = new DrawningBase(ship);
                 break;
             case "AdvLabel":
                 Random rn = new Random();
-                _cruiser = new DrawningCruiser((int)SpeedN.Value, (double)WeightN.Value,
+                EntityCruiser cruiser = new EntityCruiser((int)SpeedN.Value, (double)WeightN.Value,
                             Color.White, Color.Black, checkBoxPads.Checked, checkBoxHangars.Checked);
+                _cruiser = new DrawningCruiser(cruiser);
                 break;
         }
         labelMcolor.BackColor = Color.Empty;

ProjectCruiser/Entities/EntityBase.cs

@@ -24,9 +24,26 @@ public class EntityBase
         Speed = speed;
         Weight = weight;
         MainColor = mainc;
-        // Deckhouse = deckhouse;
         values[0] = rn.Next(1, 4);
         values[1] = rn.Next(5, 10);
         values[2] = rn.Next(1, 3);
     }
+
+    // Получение массива строк со значениями свойств
+    // объекта : тип (название класса), скорость, вес, осн. цвет [*]
+    public virtual string[] GetStringRepresentation()
+    {
+        return new[] { nameof(EntityBase), Speed.ToString(),
+            Weight.ToString(), MainColor.Name };
+    }
+
+    // decoding string to object
+    public static EntityBase? CreateEntity(string[] parameters)
+    {
+        if (parameters.Length != 4 || parameters.Length == 0 ||
+            parameters[0] != "EntityBase") return null;
+
+        return new EntityBase(Convert.ToInt32(parameters[1]),
+            Convert.ToDouble(parameters[2]), Color.FromName(parameters[3]));
+    }
 }

ProjectCruiser/Entities/EntityCruiser.cs

@@ -21,4 +21,26 @@ public class EntityCruiser : EntityBase
         HelicopterPads = pad; // non-default now for editor Form3
         Hangars = hangars;
     }
+
+    // Получение массива строк со значениями свойств
+    // объекта : тип (название класса), скорость, вес, осн. цвет [*],
+    // доп. цвет, истинность наличия площадки и (,) ангаров.
+    public override string[] GetStringRepresentation() // :O
+    {
+        return new[] { nameof(EntityCruiser), Speed.ToString(),
+            Weight.ToString(), MainColor.Name, AdditionalColor.Name,
+            HelicopterPads.ToString(), Hangars.ToString()};
+    }
+
+    // decoding string to object
+    public static EntityCruiser? CreateEntity(string[] parameters)
+    {
+        if (parameters.Length != 7 || parameters.Length == 0 ||
+            parameters[0] != "EntityCruiser") return null;
+
+        return new EntityCruiser(Convert.ToInt32(parameters[1]),
+            Convert.ToDouble(parameters[2]), Color.FromName(parameters[3]),
+            Color.FromName(parameters[4]), Convert.ToBoolean(parameters[5]),
+            Convert.ToBoolean(parameters[6]));
+    }
 }

ProjectCruiser/OceanForm1.cs

@@ -1,4 +1,5 @@
 using ProjectCruiser.DrawningSamples;
+using ProjectCruiser.Entities;
 using ProjectCruiser.MoveStrategy;
 
 namespace ProjectCruiser
@@ -59,16 +60,18 @@ namespace ProjectCruiser
             switch (type)
             {
                 case nameof(DrawningBase):
-                    _drawningCruiser = new DrawningBase(random.Next(100, 300), random.Next(1000, 3000),
+                    EntityBase ship = new EntityBase(random.Next(100, 300), random.Next(1000, 3000),
                     Color.FromArgb(random.Next(0, 256), random.Next(0, 256), random.Next(0, 256)));
+                    _drawningCruiser = new DrawningBase(ship);
                     break;
 
                 case nameof(DrawningCruiser):
-                    _drawningCruiser = new DrawningCruiser(
+                    EntityCruiser cruiser = new EntityCruiser(
                         random.Next(100, 300), random.Next(1000, 3000),
                         Color.FromArgb(random.Next(0, 256), random.Next(0, 256), random.Next(0, 256)),
                         Color.FromArgb(random.Next(0, 256), random.Next(0, 256), random.Next(0, 256)),
                         Convert.ToBoolean(random.Next(0, 2)), Convert.ToBoolean(random.Next(0, 2)));
+                    _drawningCruiser = new DrawningCruiser(cruiser);
                     break;
 
                 default:

ProjectCruiser/Program.cs

@@ -12,7 +12,6 @@ namespace ProjectCruiser
             // see https://aka.ms/applicationconfiguration.
             ApplicationConfiguration.Initialize();
             Application.Run(new ServiceForm2());
-            // -> OceanForm1() inside*
         }
     }
 }

ProjectCruiser/ServiceForm2.Designer.cs

@@ -46,10 +46,17 @@
             btnAddCruiser = new Button();
             btnCreateCompany = new Button();
             pictureBox = new PictureBox();
+            menuStrip = new MenuStrip();
+            fileToolStripMenuItem = new ToolStripMenuItem();
+            saveToolStripMenuItem = new ToolStripMenuItem();
+            loadToolStripMenuItem = new ToolStripMenuItem();
+            saveFileDialog = new SaveFileDialog();
+            openFileDialog = new OpenFileDialog();
             groupBox.SuspendLayout();
             companyPanel.SuspendLayout();
             toolPanel.SuspendLayout();
             ((System.ComponentModel.ISupportInitialize)pictureBox).BeginInit();
+            menuStrip.SuspendLayout();
             SuspendLayout();
             // 
             // comboBoxArrList
@@ -57,7 +64,7 @@
             comboBoxArrList.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
             comboBoxArrList.FormattingEnabled = true;
             comboBoxArrList.Items.AddRange(new object[] { "Storage" });
-            comboBoxArrList.Location = new Point(17, 41);
+            comboBoxArrList.Location = new Point(17, 51);
             comboBoxArrList.Name = "comboBoxArrList";
             comboBoxArrList.Size = new Size(241, 40);
             comboBoxArrList.TabIndex = 0;
@@ -70,9 +77,9 @@
             groupBox.Controls.Add(toolPanel);
             groupBox.Controls.Add(btnCreateCompany);
             groupBox.Controls.Add(comboBoxArrList);
-            groupBox.Location = new Point(1421, 10);
+            groupBox.Location = new Point(1421, 47);
             groupBox.Name = "groupBox";
-            groupBox.Size = new Size(273, 986);
+            groupBox.Size = new Size(273, 934);
             groupBox.TabIndex = 2;
             groupBox.TabStop = false;
             groupBox.Text = "Tool panel";
@@ -86,7 +93,7 @@
             companyPanel.Controls.Add(rBtnArray);
             companyPanel.Controls.Add(maskedTxtBoxCName);
             companyPanel.Controls.Add(label);
-            companyPanel.Location = new Point(17, 91);
+            companyPanel.Location = new Point(17, 98);
             companyPanel.Name = "companyPanel";
             companyPanel.Size = new Size(243, 391);
             companyPanel.TabIndex = 7;
@@ -168,7 +175,7 @@
             toolPanel.Controls.Add(btnDelete);
             toolPanel.Controls.Add(btnAddCruiser);
             toolPanel.Enabled = false;
-            toolPanel.Location = new Point(26, 567);
+            toolPanel.Location = new Point(26, 608);
             toolPanel.Name = "toolPanel";
             toolPanel.Size = new Size(226, 317);
             toolPanel.TabIndex = 13;
@@ -230,9 +237,9 @@
             // btnCreateCompany
             // 
             btnCreateCompany.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
-            btnCreateCompany.Location = new Point(16, 488);
+            btnCreateCompany.Location = new Point(16, 510);
             btnCreateCompany.Name = "btnCreateCompany";
-            btnCreateCompany.Size = new Size(245, 73);
+            btnCreateCompany.Size = new Size(245, 79);
             btnCreateCompany.TabIndex = 12;
             btnCreateCompany.Text = "Create or switch to Company";
             btnCreateCompany.UseVisualStyleBackColor = true;
@@ -241,12 +248,53 @@
             // pictureBox
             // 
             pictureBox.Dock = DockStyle.Left;
-            pictureBox.Location = new Point(0, 0);
+            pictureBox.Location = new Point(0, 40);
             pictureBox.Name = "pictureBox";
-            pictureBox.Size = new Size(1415, 1007);
+            pictureBox.Size = new Size(1415, 967);
             pictureBox.TabIndex = 3;
             pictureBox.TabStop = false;
             // 
+            // menuStrip
+            // 
+            menuStrip.ImageScalingSize = new Size(32, 32);
+            menuStrip.Items.AddRange(new ToolStripItem[] { fileToolStripMenuItem });
+            menuStrip.Location = new Point(0, 0);
+            menuStrip.Name = "menuStrip";
+            menuStrip.Size = new Size(1700, 40);
+            menuStrip.TabIndex = 4;
+            menuStrip.Text = "menuStrip1";
+            // 
+            // fileToolStripMenuItem
+            // 
+            fileToolStripMenuItem.DropDownItems.AddRange(new ToolStripItem[] { saveToolStripMenuItem, loadToolStripMenuItem });
+            fileToolStripMenuItem.Name = "fileToolStripMenuItem";
+            fileToolStripMenuItem.Size = new Size(71, 36);
+            fileToolStripMenuItem.Text = "File";
+            // 
+            // saveToolStripMenuItem
+            // 
+            saveToolStripMenuItem.Name = "saveToolStripMenuItem";
+            saveToolStripMenuItem.ShortcutKeys = Keys.Control | Keys.S;
+            saveToolStripMenuItem.Size = new Size(277, 44);
+            saveToolStripMenuItem.Text = "Save";
+            saveToolStripMenuItem.Click += saveToolStripMenuItem_Click;
+            // 
+            // loadToolStripMenuItem
+            // 
+            loadToolStripMenuItem.Name = "loadToolStripMenuItem";
+            loadToolStripMenuItem.ShortcutKeys = Keys.Control | Keys.L;
+            loadToolStripMenuItem.Size = new Size(277, 44);
+            loadToolStripMenuItem.Text = "Load";
+            loadToolStripMenuItem.Click += loadToolStripMenuItem_Click;
+            // 
+            // saveFileDialog
+            // 
+            saveFileDialog.Filter = "txt file|*.txt";
+            // 
+            // openFileDialog
+            // 
+            openFileDialog.Filter = "txt file|*.txt";
+            // 
             // ServiceForm2
             // 
             AutoScaleDimensions = new SizeF(13F, 32F);
@@ -254,6 +302,8 @@
             ClientSize = new Size(1700, 1007);
             Controls.Add(pictureBox);
             Controls.Add(groupBox);
+            Controls.Add(menuStrip);
+            MainMenuStrip = menuStrip;
             Name = "ServiceForm2";
             Text = "ServiceForm2";
             groupBox.ResumeLayout(false);
@@ -262,7 +312,10 @@
             toolPanel.ResumeLayout(false);
             toolPanel.PerformLayout();
             ((System.ComponentModel.ISupportInitialize)pictureBox).EndInit();
+            menuStrip.ResumeLayout(false);
+            menuStrip.PerformLayout();
             ResumeLayout(false);
+            PerformLayout();
         }
 
         #endregion
@@ -285,5 +338,11 @@
         private Button btnDeleteCollection;
         private Button btnCreateCompany;
         private Panel toolPanel;
+        private MenuStrip menuStrip;
+        private ToolStripMenuItem fileToolStripMenuItem;
+        private ToolStripMenuItem saveToolStripMenuItem;
+        private ToolStripMenuItem loadToolStripMenuItem;
+        private SaveFileDialog saveFileDialog;
+        private OpenFileDialog openFileDialog;
     }
 }

ProjectCruiser/ServiceForm2.cs

@@ -21,17 +21,7 @@ public partial class ServiceForm2 : Form
         toolPanel.Enabled = false;
     }
 
-    // Color picker (default : random)
-    private static Color pickColor(Random r)
-    {
-        Color cl = new Color();
-        ColorDialog dialog = new();
-
-        if (dialog.ShowDialog() == DialogResult.OK) cl = dialog.Color;
-        else Color.FromArgb(r.Next(0, 256), r.Next(0, 256), r.Next(0, 256));
-
-        return cl;
-    }
+    // Color picker (default : random) <...>
 
     // Добавление корабля
     private void btnAddTransport_Click(object sender, EventArgs e)
@@ -194,4 +184,41 @@ public partial class ServiceForm2 : Form
         toolPanel.Enabled = true; // block of buttons at the right bottom
         RefreshListBoxItems();
     }
+
+    // saving to file
+    private void saveToolStripMenuItem_Click(object sender, EventArgs e)
+    {
+        if (saveFileDialog.ShowDialog() == DialogResult.OK)
+        {
+            if (_storageCollection.SaveData(saveFileDialog.FileName))
+            {
+                MessageBox.Show(" < Saved succesfully >",
+                "Result :", MessageBoxButtons.OK, MessageBoxIcon.Information);
+            }
+            else
+            {
+                MessageBox.Show("< Failed to save >", "Result :",
+                MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+    }
+
+    // loading from file
+    private void loadToolStripMenuItem_Click(object sender, EventArgs e)
+    {
+        if (openFileDialog.ShowDialog() == DialogResult.OK)
+        {
+            if (_storageCollection.LoadData(openFileDialog.FileName))
+            {
+                MessageBox.Show(" < Loaded succesfully >",
+                "Result :", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                RefreshListBoxItems();
+            }
+            else
+            {
+                MessageBox.Show("< Failed to load >", "Result :",
+                MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+    }
 }

ProjectCruiser/ServiceForm2.resx

@@ -117,4 +117,13 @@
   <resheader name="writer">
     <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
+  <metadata name="menuStrip.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>17, 17</value>
+  </metadata>
+  <metadata name="saveFileDialog.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>217, 17</value>
+  </metadata>
+  <metadata name="openFileDialog.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>460, 17</value>
+  </metadata>
 </root>