4 лабораторная работа

WarmlyLocomotive/WarmlyLocomotive/CollectionGenericObjects/CollectionType.cs

@@ -0,0 +1,22 @@
+namespace WarmlyLocomotive.CollectionGenericObjects;
+
+/// <summary>
+/// Тип коллекции
+/// </summary>
+public enum CollectionType
+{
+    /// <summary>
+    /// Неопределено
+    /// </summary>
+    None = 0,
+
+    /// <summary>
+    /// Массив
+    /// </summary>
+    Massive = 1,
+
+    /// <summary>
+    /// Список
+    /// </summary>
+    List = 2
+}

WarmlyLocomotive/WarmlyLocomotive/CollectionGenericObjects/ListGenericObjects.cs

@@ -0,0 +1,82 @@
+namespace WarmlyLocomotive.CollectionGenericObjects;
+
+/// <summary>
+/// Параметризованный набор объектов
+/// </summary>
+/// <typeparam name="T">Параметр: ограничение - ссылочный тип</typeparam>
+public class ListGenericObjects<T> : ICollectionGenericObjects<T>
+    where T : class
+{
+    /// <summary>
+    /// Список объектов, которые храним
+    /// </summary>
+    private readonly List<T?> _collection;
+
+    /// <summary>
+    /// Максимально допустимое число объектов в списке
+    /// </summary>
+    private int _maxCount;
+
+    public int Count => _collection.Count;
+
+    public int SetMaxCount { set { if (value > 0) { _maxCount = value; } } }
+
+    /// <summary>
+    /// Конструктор
+    /// </summary>
+    public ListGenericObjects()
+    {
+        _collection = new();
+    }
+
+
+    public T? Get(int position)
+    {
+        // TODO проверка позиции
+        if (position >= Count || position < 0)
+        {
+            return null;
+        }
+        return _collection[position];
+    }
+
+    public int Insert(T obj)
+    {
+        // TODO проверка, что не превышено максимальное количество элементов
+        if (Count == _maxCount)
+        {
+            return -1;
+        }
+        // TODO вставка в конец набора
+        _collection.Add(obj);
+        return _collection.Count;
+    }
+    public int Insert(T obj, int position)
+    {
+        // TODO проверка, что не превышено максимальное количество элементов
+        if (Count == _maxCount)
+        {
+            return -1;
+        }
+        // TODO проверка позиции
+        if (position >= Count || position < 0)
+        {
+            return -1;
+        }
+        // TODO вставка по позиции
+        _collection.Insert(position, obj);
+        return position;
+    }
+    public T? Remove(int position)
+    {
+        // TODO проверка позиции
+        if (position >= Count || position < 0)
+        {
+            return null;
+        }
+        // TODO удаление объекта из списка
+        T? obj = _collection[position];
+        _collection.RemoveAt(position);
+        return obj;
+    }
+}

WarmlyLocomotive/WarmlyLocomotive/CollectionGenericObjects/StorageCollection.cs

@@ -0,0 +1,83 @@
+namespace WarmlyLocomotive.CollectionGenericObjects;
+
+/// <summary>
+/// Класс-хранилище коллекций
+/// </summary>
+/// <typeparam name="T"></typeparam>
+public class StorageCollection<T>
+    where T : class
+{
+    /// <summary>
+    /// Словарь (хранилище) с коллекциями
+    /// </summary>
+    readonly Dictionary<string, ICollectionGenericObjects<T>> _storages;
+
+    /// <summary>
+    /// Возвращение списка названий коллекций
+    /// </summary>
+    public List<string> Keys => _storages.Keys.ToList();
+
+    /// <summary>
+    /// Конструктор
+    /// </summary>
+    public StorageCollection()
+    {
+        _storages = new Dictionary<string, ICollectionGenericObjects<T>>();
+    }
+
+    /// <summary>
+    /// Добавление коллекции в хранилище
+    /// </summary>
+    /// <param name="name">Название коллекции</param>
+    /// <param name="collectionType">тип коллекции</param>
+    public void AddCollection(string name, CollectionType collectionType)
+    {
+        // TODO проверка, что name не пустой и нет в словаре записи с таким ключом
+        if (name == null || _storages.ContainsKey(name))
+        {
+            return;
+        }
+        // TODO Прописать логику для добавления
+        if (collectionType == CollectionType.List)
+        {
+            _storages.Add(name, new ListGenericObjects<T>());
+        }
+        if (collectionType == CollectionType.Massive)
+        {
+            _storages.Add(name, new MassiveGenericObjects<T>());
+        }
+    }
+
+    /// <summary>
+    /// Удаление коллекции
+    /// </summary>
+    /// <param name="name">Название коллекции</param>
+    public void DelCollection(string name)
+    {
+        if (name == null || !_storages.ContainsKey(name))
+        {
+            return;
+        }
+        // TODO Прописать логику для удаления коллекции
+        _storages.Remove(name);
+    }
+
+    /// <summary>
+    /// Доступ к коллекции
+    /// </summary>
+    /// <param name="name">Название коллекции</param>
+    /// <returns></returns>
+    public ICollectionGenericObjects<T>? this[string name]
+    {
+        get
+        {
+            // TODO Продумать логику получения объекта
+            if (_storages.ContainsKey(name))
+            {
+                return _storages[name];
+            }
+            return null;
+        }
+    }
+
+}

WarmlyLocomotive/WarmlyLocomotive/FormLocomotiveCollection.Designer.cs

@@ -29,6 +29,15 @@
         private void InitializeComponent()
         {
             groupBoxTools = new GroupBox();
+            buttonCreateCompany = new Button();
+            panelStorage = new Panel();
+            buttonCollectionDel = new Button();
+            listBoxCollection = new ListBox();
+            buttonCollectionAdd = new Button();
+            radioButtonList = new RadioButton();
+            radioButtonMassive = new RadioButton();
+            textBoxCollectionName = new TextBox();
+            labelCollectionName = new Label();
             buttonRefresh = new Button();
             buttonGoToCheck = new Button();
             buttonRemoveLocomotive = new Button();
@@ -37,34 +46,125 @@
             buttonAddLocomotive = new Button();
             comboBoxSelectorCompany = new ComboBox();
             pictureBox = new PictureBox();
+            panelCompanyTools = new Panel();
             groupBoxTools.SuspendLayout();
+            panelStorage.SuspendLayout();
             ((System.ComponentModel.ISupportInitialize)pictureBox).BeginInit();
+            panelCompanyTools.SuspendLayout();
             SuspendLayout();
             // 
             // groupBoxTools
             // 
-            groupBoxTools.Controls.Add(buttonRefresh);
+            groupBoxTools.Controls.Add(panelCompanyTools);
-            groupBoxTools.Controls.Add(buttonGoToCheck);
+            groupBoxTools.Controls.Add(buttonCreateCompany);
-            groupBoxTools.Controls.Add(buttonRemoveLocomotive);
+            groupBoxTools.Controls.Add(panelStorage);
-            groupBoxTools.Controls.Add(maskedTextBoxPosition);
-            groupBoxTools.Controls.Add(buttonAddWarmlyLocomotive);
-            groupBoxTools.Controls.Add(buttonAddLocomotive);
             groupBoxTools.Controls.Add(comboBoxSelectorCompany);
             groupBoxTools.Dock = DockStyle.Right;
-            groupBoxTools.Location = new Point(808, 0);
+            groupBoxTools.Location = new Point(821, 0);
             groupBoxTools.Name = "groupBoxTools";
-            groupBoxTools.Size = new Size(193, 527);
+            groupBoxTools.Size = new Size(193, 618);
             groupBoxTools.TabIndex = 0;
             groupBoxTools.TabStop = false;
             groupBoxTools.Text = "Инструменты";
-            groupBoxTools.Enter += groupBoxTools_Enter;
+            // 
+            // buttonCreateCompany
+            // 
+            buttonCreateCompany.Location = new Point(6, 309);
+            buttonCreateCompany.Name = "buttonCreateCompany";
+            buttonCreateCompany.Size = new Size(181, 29);
+            buttonCreateCompany.TabIndex = 8;
+            buttonCreateCompany.Text = "Создать компанию";
+            buttonCreateCompany.UseVisualStyleBackColor = true;
+            buttonCreateCompany.Click += ButtonCreateCompany_Click;
+            // 
+            // panelStorage
+            // 
+            panelStorage.Controls.Add(buttonCollectionDel);
+            panelStorage.Controls.Add(listBoxCollection);
+            panelStorage.Controls.Add(buttonCollectionAdd);
+            panelStorage.Controls.Add(radioButtonList);
+            panelStorage.Controls.Add(radioButtonMassive);
+            panelStorage.Controls.Add(textBoxCollectionName);
+            panelStorage.Controls.Add(labelCollectionName);
+            panelStorage.Dock = DockStyle.Top;
+            panelStorage.Location = new Point(3, 23);
+            panelStorage.Name = "panelStorage";
+            panelStorage.Size = new Size(187, 246);
+            panelStorage.TabIndex = 7;
+            // 
+            // buttonCollectionDel
+            // 
+            buttonCollectionDel.Location = new Point(3, 205);
+            buttonCollectionDel.Name = "buttonCollectionDel";
+            buttonCollectionDel.Size = new Size(181, 29);
+            buttonCollectionDel.TabIndex = 6;
+            buttonCollectionDel.Text = "Удалить коллекцию";
+            buttonCollectionDel.UseVisualStyleBackColor = true;
+            buttonCollectionDel.Click += ButtonCollectionDel_Click;
+            // 
+            // listBoxCollection
+            // 
+            listBoxCollection.FormattingEnabled = true;
+            listBoxCollection.ItemHeight = 20;
+            listBoxCollection.Location = new Point(6, 135);
+            listBoxCollection.Name = "listBoxCollection";
+            listBoxCollection.Size = new Size(172, 64);
+            listBoxCollection.TabIndex = 5;
+            // 
+            // buttonCollectionAdd
+            // 
+            buttonCollectionAdd.Location = new Point(3, 95);
+            buttonCollectionAdd.Name = "buttonCollectionAdd";
+            buttonCollectionAdd.Size = new Size(181, 29);
+            buttonCollectionAdd.TabIndex = 4;
+            buttonCollectionAdd.Text = "Добавить коллекцию";
+            buttonCollectionAdd.UseVisualStyleBackColor = true;
+            buttonCollectionAdd.Click += ButtonCollectionAdd_Click;
+            // 
+            // radioButtonList
+            // 
+            radioButtonList.AutoSize = true;
+            radioButtonList.Location = new Point(104, 66);
+            radioButtonList.Name = "radioButtonList";
+            radioButtonList.Size = new Size(80, 24);
+            radioButtonList.TabIndex = 3;
+            radioButtonList.TabStop = true;
+            radioButtonList.Text = "Список";
+            radioButtonList.UseVisualStyleBackColor = true;
+            // 
+            // radioButtonMassive
+            // 
+            radioButtonMassive.AutoSize = true;
+            radioButtonMassive.Location = new Point(3, 66);
+            radioButtonMassive.Name = "radioButtonMassive";
+            radioButtonMassive.Size = new Size(82, 24);
+            radioButtonMassive.TabIndex = 2;
+            radioButtonMassive.TabStop = true;
+            radioButtonMassive.Text = "Массив";
+            radioButtonMassive.UseVisualStyleBackColor = true;
+            // 
+            // textBoxCollectionName
+            // 
+            textBoxCollectionName.Location = new Point(3, 33);
+            textBoxCollectionName.Name = "textBoxCollectionName";
+            textBoxCollectionName.Size = new Size(181, 27);
+            textBoxCollectionName.TabIndex = 1;
+            // 
+            // labelCollectionName
+            // 
+            labelCollectionName.AutoSize = true;
+            labelCollectionName.Location = new Point(20, 10);
+            labelCollectionName.Name = "labelCollectionName";
+            labelCollectionName.Size = new Size(158, 20);
+            labelCollectionName.TabIndex = 0;
+            labelCollectionName.Text = "Название коллекции:";
             // 
             // buttonRefresh
             // 
             buttonRefresh.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;
-            buttonRefresh.Location = new Point(6, 440);
+            buttonRefresh.Location = new Point(6, 231);
             buttonRefresh.Name = "buttonRefresh";
-            buttonRefresh.Size = new Size(175, 48);
+            buttonRefresh.Size = new Size(172, 34);
             buttonRefresh.TabIndex = 6;
             buttonRefresh.Text = "Обновить";
             buttonRefresh.UseVisualStyleBackColor = true;
@@ -73,9 +173,9 @@
             // buttonGoToCheck
             // 
             buttonGoToCheck.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;
-            buttonGoToCheck.Location = new Point(6, 348);
+            buttonGoToCheck.Location = new Point(6, 195);
             buttonGoToCheck.Name = "buttonGoToCheck";
-            buttonGoToCheck.Size = new Size(175, 48);
+            buttonGoToCheck.Size = new Size(172, 33);
             buttonGoToCheck.TabIndex = 5;
             buttonGoToCheck.Text = "Передать на тесты";
             buttonGoToCheck.UseVisualStyleBackColor = true;
@@ -84,9 +184,9 @@
             // buttonRemoveLocomotive
             // 
             buttonRemoveLocomotive.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;
-            buttonRemoveLocomotive.Location = new Point(6, 294);
+            buttonRemoveLocomotive.Location = new Point(6, 144);
             buttonRemoveLocomotive.Name = "buttonRemoveLocomotive";
-            buttonRemoveLocomotive.Size = new Size(175, 48);
+            buttonRemoveLocomotive.Size = new Size(172, 48);
             buttonRemoveLocomotive.TabIndex = 4;
             buttonRemoveLocomotive.Text = "Удалить локомотив";
             buttonRemoveLocomotive.UseVisualStyleBackColor = true;
@@ -94,20 +194,19 @@
             // 
             // maskedTextBoxPosition
             // 
-            maskedTextBoxPosition.Location = new Point(6, 234);
+            maskedTextBoxPosition.Location = new Point(6, 111);
             maskedTextBoxPosition.Mask = "00";
             maskedTextBoxPosition.Name = "maskedTextBoxPosition";
             maskedTextBoxPosition.Size = new Size(175, 27);
             maskedTextBoxPosition.TabIndex = 3;
             maskedTextBoxPosition.ValidatingType = typeof(int);
-            maskedTextBoxPosition.MaskInputRejected += maskedTextBoxPosition_MaskInputRejected;
             // 
             // buttonAddWarmlyLocomotive
             // 
             buttonAddWarmlyLocomotive.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;
-            buttonAddWarmlyLocomotive.Location = new Point(6, 142);
+            buttonAddWarmlyLocomotive.Location = new Point(6, 57);
             buttonAddWarmlyLocomotive.Name = "buttonAddWarmlyLocomotive";
-            buttonAddWarmlyLocomotive.Size = new Size(175, 48);
+            buttonAddWarmlyLocomotive.Size = new Size(172, 48);
             buttonAddWarmlyLocomotive.TabIndex = 2;
             buttonAddWarmlyLocomotive.Text = "Добавление локомотива";
             buttonAddWarmlyLocomotive.UseVisualStyleBackColor = true;
@@ -116,9 +215,9 @@
             // buttonAddLocomotive
             // 
             buttonAddLocomotive.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;
-            buttonAddLocomotive.Location = new Point(6, 88);
+            buttonAddLocomotive.Location = new Point(6, 3);
             buttonAddLocomotive.Name = "buttonAddLocomotive";
-            buttonAddLocomotive.Size = new Size(175, 48);
+            buttonAddLocomotive.Size = new Size(172, 48);
             buttonAddLocomotive.TabIndex = 1;
             buttonAddLocomotive.Text = "Добавление тепловоза";
             buttonAddLocomotive.UseVisualStyleBackColor = true;
@@ -130,7 +229,7 @@
             comboBoxSelectorCompany.DropDownStyle = ComboBoxStyle.DropDownList;
             comboBoxSelectorCompany.FormattingEnabled = true;
             comboBoxSelectorCompany.Items.AddRange(new object[] { "Депо" });
-            comboBoxSelectorCompany.Location = new Point(6, 26);
+            comboBoxSelectorCompany.Location = new Point(6, 275);
             comboBoxSelectorCompany.Name = "comboBoxSelectorCompany";
             comboBoxSelectorCompany.Size = new Size(175, 28);
             comboBoxSelectorCompany.TabIndex = 0;
@@ -141,24 +240,40 @@
             pictureBox.Dock = DockStyle.Fill;
             pictureBox.Location = new Point(0, 0);
             pictureBox.Name = "pictureBox";
-            pictureBox.Size = new Size(808, 527);
+            pictureBox.Size = new Size(821, 618);
             pictureBox.TabIndex = 1;
             pictureBox.TabStop = false;
-            pictureBox.Click += pictureBox_Click;
+            // 
+            // panelCompanyTools
+            // 
+            panelCompanyTools.Controls.Add(buttonAddLocomotive);
+            panelCompanyTools.Controls.Add(buttonAddWarmlyLocomotive);
+            panelCompanyTools.Controls.Add(maskedTextBoxPosition);
+            panelCompanyTools.Controls.Add(buttonRefresh);
+            panelCompanyTools.Controls.Add(buttonRemoveLocomotive);
+            panelCompanyTools.Controls.Add(buttonGoToCheck);
+            panelCompanyTools.Dock = DockStyle.Bottom;
+            panelCompanyTools.Enabled = false;
+            panelCompanyTools.Location = new Point(3, 347);
+            panelCompanyTools.Name = "panelCompanyTools";
+            panelCompanyTools.Size = new Size(187, 268);
+            panelCompanyTools.TabIndex = 9;
             // 
             // FormLocomotiveCollection
             // 
             AutoScaleDimensions = new SizeF(8F, 20F);
             AutoScaleMode = AutoScaleMode.Font;
-            ClientSize = new Size(1001, 527);
+            ClientSize = new Size(1014, 618);
             Controls.Add(pictureBox);
             Controls.Add(groupBoxTools);
             Name = "FormLocomotiveCollection";
             Text = "Коллекция локомотивов";
-            Load += FormLocomotiveCollection_Load;
             groupBoxTools.ResumeLayout(false);
-            groupBoxTools.PerformLayout();
+            panelStorage.ResumeLayout(false);
+            panelStorage.PerformLayout();
             ((System.ComponentModel.ISupportInitialize)pictureBox).EndInit();
+            panelCompanyTools.ResumeLayout(false);
+            panelCompanyTools.PerformLayout();
             ResumeLayout(false);
         }
 
@@ -173,5 +288,15 @@
         private Button buttonGoToCheck;
         private Button buttonRemoveLocomotive;
         private MaskedTextBox maskedTextBoxPosition;
+        private Panel panelStorage;
+        private TextBox textBoxCollectionName;
+        private Label labelCollectionName;
+        private RadioButton radioButtonList;
+        private RadioButton radioButtonMassive;
+        private Button buttonCollectionAdd;
+        private Button buttonCollectionDel;
+        private ListBox listBoxCollection;
+        private Button buttonCreateCompany;
+        private Panel panelCompanyTools;
     }
 }

WarmlyLocomotive/WarmlyLocomotive/FormLocomotiveCollection.cs

@@ -8,6 +8,11 @@ namespace WarmlyLocomotive;
 /// </summary>
 public partial class FormLocomotiveCollection : Form
 {
+    /// <summary>
+    /// Хранилише коллекций
+    /// </summary>
+    private readonly StorageCollection<DrawningLocomotive> _storageCollection;
+
     /// <summary>
     /// Компания
     /// </summary>
@@ -19,6 +24,7 @@ public partial class FormLocomotiveCollection : Form
     public FormLocomotiveCollection()
     {
         InitializeComponent();
+        _storageCollection = new();
     }
 
     /// <summary>
@@ -28,12 +34,7 @@ public partial class FormLocomotiveCollection : Form
     /// <param name="e"></param>
     private void ComboBoxSelectorCompany_SelectedIndexChanged(object sender, EventArgs e)
     {
-        switch (comboBoxSelectorCompany.Text)
+        panelCompanyTools.Enabled = false;
-        {
-            case "Депо":
-                _company = new LocomotiveSharingService(pictureBox.Width, pictureBox.Height, new MassiveGenericObjects<DrawningLocomotive>());
-                break;
-        }
     }
 
     /// <summary>
@@ -89,22 +90,6 @@ public partial class FormLocomotiveCollection : Form
         return color;
     }
 
-
-    private void pictureBox_Click(object sender, EventArgs e)
-    {
-
-    }
-
-    private void FormLocomotiveCollection_Load(object sender, EventArgs e)
-    {
-
-    }
-
-    private void groupBoxTools_Enter(object sender, EventArgs e)
-    {
-
-    }
-
     private void ButtonAddWarmlyLocomotive_Click(object sender, EventArgs e) => CreateObject(nameof(DrawningWarmlyLocomotive));
 
     private void ButtonAddLocomotive_Click(object sender, EventArgs e) => CreateObject(nameof(DrawningLocomotive));
@@ -180,8 +165,99 @@ public partial class FormLocomotiveCollection : Form
         pictureBox.Image = _company.Show();
     }
 
-    private void maskedTextBoxPosition_MaskInputRejected(object sender, MaskInputRejectedEventArgs e)
+  
+    /// <summary>
+    /// Добавление коллекции
+    /// </summary>
+    /// <param name="sender"></param>
+    /// <param name="e"></param>
+    private void ButtonCollectionAdd_Click(object sender, EventArgs e)
     {
+        if (string.IsNullOrEmpty(textBoxCollectionName.Text) || (!radioButtonList.Checked && !radioButtonMassive.Checked))
+        {
+            MessageBox.Show("Не все данные заполнены", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            return;
+        }
+        CollectionType collectionType = CollectionType.None;
 
+        if (radioButtonMassive.Checked)
+        {
+            collectionType = CollectionType.Massive;
+        }
+        else if (radioButtonList.Checked)
+        {
+            collectionType = CollectionType.List;
+        }
+        _storageCollection.AddCollection(textBoxCollectionName.Text, collectionType);
+        RerfreshListBoxItems();
+    }
+
+    /// <summary>
+    /// Удаление коллекции
+    /// </summary>
+    /// <param name="sender"></param>
+    /// <param name="e"></param>
+    private void ButtonCollectionDel_Click(object sender, EventArgs e)
+    {
+        // TODO прописать логику удаления элемента из коллекции
+        // нужно убедиться, что есть выбранная коллекция
+        // спросить у пользователя через MessageBox, что он подтверждает, что хочет удалить запись
+        // удалить и обновить ListBox
+        if (!radioButtonList.Checked && !radioButtonMassive.Checked || string.IsNullOrEmpty(textBoxCollectionName.Text))
+        {
+            return;
+        }
+
+        ICollectionGenericObjects<DrawningLocomotive>? collection = _storageCollection[listBoxCollection.SelectedItem.ToString() ?? string.Empty];
+        if (MessageBox.Show("Удалить объект?", "Удаление", MessageBoxButtons.YesNo, MessageBoxIcon.Question) != DialogResult.Yes)
+        {
+            return;
+        }
+        _storageCollection.DelCollection(listBoxCollection.SelectedItem.ToString());
+        RerfreshListBoxItems();
+    }
+
+    /// <summary>
+    /// Создание компании
+    /// </summary>
+    /// <param name="sender"></param>
+    /// <param name="e"></param>
+    private void ButtonCreateCompany_Click(object sender, EventArgs e)
+    {
+        if (listBoxCollection.SelectedIndex < 0 || listBoxCollection.SelectedItem == null)
+        {
+            MessageBox.Show("Коллекция не выбрана");
+            return;
+        }
+        ICollectionGenericObjects<DrawningLocomotive>? collection = _storageCollection[listBoxCollection.SelectedItem.ToString() ?? string.Empty];
+        if (collection == null)
+        {
+            MessageBox.Show("Коллекция не проинициализирована");
+            return;
+        }
+        switch (comboBoxSelectorCompany.Text)
+        {
+            case "Депо":
+                _company = new LocomotiveSharingService(pictureBox.Width, pictureBox.Height, collection);
+                break;
+        }
+        panelCompanyTools.Enabled = true;
+        RerfreshListBoxItems();
+    }
+
+    /// <summary>
+    /// Обновление списка в listBoxCollection
+    /// </summary>
+    private void RerfreshListBoxItems()
+    {
+        listBoxCollection.Items.Clear();
+        for (int i = 0; i < _storageCollection.Keys?.Count; ++i)
+        {
+            string? colName = _storageCollection.Keys?[i];
+            if (!string.IsNullOrEmpty(colName))
+            {
+                listBoxCollection.Items.Add(colName);
+            }
+        }
     }
 }