Хоть как-то но работает...

VolkovLabs/WinFormsLibraryVolkov/CustomInputRangeDate.Designer.cs

@@ -38,6 +38,9 @@
             dateTimePicker.Size = new Size(142, 23);
             dateTimePicker.TabIndex = 0;
             dateTimePicker.ValueChanged += dateTimePicker_ValueChanged;
+            dateTimePicker.Enter += dateTimePicker_Enter;
+            dateTimePicker.MaxDate = new DateTime(2024, 12, 31, 0, 0, 0, 0);
+            dateTimePicker.MinDate = new DateTime(2004, 1, 11, 0, 0, 0, 0);
             // 
             // CustomInputRangeDate
             // 

VolkovLabs/WinFormsLibraryVolkov/CustomInputRangeDate.cs

@@ -27,6 +27,7 @@ namespace WinFormsLibraryVolkov
             InitializeComponent();
         }
 
+        //Ошибка
         public string Error { get; protected set; } = string.Empty;
 
         //Публичное свойство для установки и получения введенного значения(set, get).

VolkovLabs/WinFormsLibraryVolkov/CustomSelectedCheckedListBox.Designer.cs

@@ -1,6 +1,6 @@
 namespace WinFormsLibraryVolkov
 {
-    partial class SelectionListBox
+    partial class CustomSelectedCheckedListBox
     {
         /// <summary> 
         /// Обязательная переменная конструктора.
@@ -39,7 +39,7 @@
             checkedListBox.Size = new Size(144, 148);
             checkedListBox.TabIndex = 0;
             checkedListBox.Dock = DockStyle.Fill;
-            checkedListBox.ItemCheck += new System.Windows.Forms.ItemCheckEventHandler(this.CheckedListBox_ItemCheck);
+            checkedListBox.ItemCheck += new System.Windows.Forms.ItemCheckEventHandler(this.checkedListBox_ItemCheck);
             checkedListBox.SelectedIndexChanged += new System.EventHandler(this.checkedListBox_SelectedIndexChanged);
             // 
             // SelectionListBox

VolkovLabs/WinFormsLibraryVolkov/CustomSelectedCheckedListBox.cs

@@ -0,0 +1,113 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace WinFormsLibraryVolkov
+{
+    public partial class CustomSelectedCheckedListBox : UserControl
+    {
+        // Приватный список для хранения элементов
+        private List<string> itemsList = new List<string>();
+
+        public event EventHandler _changeEvent;
+
+        public CustomSelectedCheckedListBox()
+        {
+            InitializeComponent();
+        }
+
+        // Метод для заполнения списка строками
+        public void PopulateList(List<string> items)
+        {
+            if (items == null)
+                throw new ArgumentNullException(nameof(items));
+
+            foreach (var item in items)
+            {
+                if (!itemsList.Contains(item))
+                {
+                    itemsList.Add(item);
+                    checkedListBox.Items.Add(item, false);
+                }
+            }
+        }
+
+        public void AddItem(string newItem)
+        {
+            if (!itemsList.Contains(newItem))
+            {
+                itemsList.Add(newItem);
+                UpdateCheckedListBox();
+            }
+        }
+
+        // Метод для обновления CheckedListBox на основе itemsList
+        private void UpdateCheckedListBox()
+        {
+            checkedListBox.Items.Clear();
+            foreach (var item in itemsList)
+            {
+                checkedListBox.Items.Add(item, false);
+            }
+        }
+
+        //Cобытие, вызываемое при смене значения в CheckedListBox
+        public event EventHandler ChangeEvent
+        {
+            add
+            {
+                _changeEvent += value;
+            }
+            remove
+            {
+                _changeEvent -= value;
+            }
+
+        }
+
+        // Метод для очистки списка
+        public void ClearList()
+        {
+            checkedListBox.Items.Clear();
+            itemsList.Clear();
+        }
+
+        // Публичное свойство для получения и установки выбранного значения
+        public string SelectedElement
+        {
+            get
+            {
+                return (checkedListBox.SelectedIndex > -1 && checkedListBox.GetItemChecked(checkedListBox.SelectedIndex)) ? checkedListBox.SelectedItem.ToString() : string.Empty;
+            }
+            set
+            {
+                if (checkedListBox.Items.Contains(value))
+                {
+                    checkedListBox.SelectedItem = value;
+                }
+            }
+        }
+
+        // Обработчик изменения состояния элементов
+        private void checkedListBox_ItemCheck(object sender, ItemCheckEventArgs e)
+        {
+            if (e.NewValue == CheckState.Checked && checkedListBox.CheckedItems.Count > 0)
+            {
+                checkedListBox.ItemCheck -= checkedListBox_ItemCheck;
+                checkedListBox.SetItemChecked(checkedListBox.CheckedIndices[0], value: false);
+                checkedListBox.ItemCheck += checkedListBox_ItemCheck;
+            }
+        }
+
+        private void checkedListBox_SelectedIndexChanged(object sender, EventArgs e)
+        {
+            _changeEvent?.Invoke(sender, e);
+        }
+    }
+}

VolkovLabs/WinFormsLibraryVolkov/CustomTreeCell.cs

@@ -34,6 +34,44 @@ namespace WinFormsLibraryVolkov
             }
         }
 
+        // Обновленный метод для добавления одного элемента в дерево
+        public void AddCell<T>(int columnIndex, T element)
+        {
+            if (Levels == null || element == null || columnIndex < 0 || columnIndex >= Levels.NodeNames.Count)
+            {
+                return;
+            }
+
+            TreeNodeCollection treeNodeCollection = treeView.Nodes;
+            int num = 0;
+            foreach (string nodeName in Levels.NodeNames)
+            {
+                // Получение значения свойства или поля
+                PropertyInfo property = element.GetType().GetProperty(nodeName);
+                string text = property?.GetValue(element, null)?.ToString() ?? nodeName;
+
+                TreeNode treeNode = null;
+                foreach (TreeNode item in treeNodeCollection)
+                {
+                    if (item.Text == text)
+                    {
+                        treeNode = item;
+                        break;
+                    }
+                }
+
+                // Если узел не найден, добавляем новый
+                treeNodeCollection = (treeNode == null) ? treeNodeCollection.Add(text).Nodes : treeNode.Nodes;
+
+                if (num >= columnIndex)
+                {
+                    break;
+                }
+
+                num++;
+            }
+        }
+
         public T GetSelectedObject<T>() where T : class, new()
         {
             if (treeView.SelectedNode == null || Levels == null || treeView.SelectedNode.Nodes.Count > 0)

VolkovLabs/WinFormsLibraryVolkov/SelectionListBox.cs

@@ -1,101 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Data;
-using System.Drawing;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using System.Windows.Forms;
-
-namespace WinFormsLibraryVolkov
-{
-    public partial class SelectionListBox : UserControl
-    {
-        public event EventHandler _changeEvent;
-
-        public SelectionListBox()
-        {
-            InitializeComponent();
-        }
-
-        // Метод для заполнения списка строками
-        public void PopulateList(IEnumerable<string> items)
-        {
-            if (items == null)
-                throw new ArgumentNullException(nameof(items));
-
-            checkedListBox.Items.Clear();
-            foreach (var item in items)
-            {
-                checkedListBox.Items.Add(item, false);
-            }
-        }
-
-        // Метод для очистки списка
-        public void ClearList()
-        {
-            checkedListBox.Items.Clear();
-        }
-
-        // Публичное свойство для получения и установки выбранного значения
-        public string SelectedValue
-        {
-            get
-            {
-                foreach (var item in checkedListBox.CheckedItems)
-                {
-                    return item.ToString();
-                }
-                return string.Empty;
-            }
-            set
-            {
-                bool found = false;
-                for (int i = 0; i < checkedListBox.Items.Count; i++)
-                {
-                    if (checkedListBox.Items[i].ToString() == value)
-                    {
-                        checkedListBox.SetItemChecked(i, true);
-                        found = true;
-                    }
-                    else
-                    {
-                        checkedListBox.SetItemChecked(i, false);
-                    }
-                }
-                if (!found)
-                {
-                    // Если значение не найдено, очистить выбор
-                    foreach (int index in checkedListBox.CheckedIndices)
-                    {
-                        checkedListBox.SetItemChecked(index, false);
-                    }
-                }
-            }
-        }
-
-        // Обработчик изменения состояния элементов
-        private void CheckedListBox_ItemCheck(object sender, ItemCheckEventArgs e)
-        {
-            // Используем BeginInvoke, чтобы дождаться завершения изменения
-            this.BeginInvoke((MethodInvoker)delegate
-            {
-                // Убедимся, что только один элемент выбран
-                for (int i = 0; i < checkedListBox.Items.Count; i++)
-                {
-                    if (i != e.Index)
-                    {
-                        checkedListBox.SetItemChecked(i, false);
-                    }
-                }
-                // Вызов события
-                _changeEvent?.Invoke(this, EventArgs.Empty);
-            });
-        }
-        private void checkedListBox_SelectedIndexChanged(object sender, EventArgs e)
-        {
-            _changeEvent?.Invoke(sender, e);
-        }
-    }
-}

VolkovLabs/WinFormsTestApp/FormMain.Designer.cs

@@ -1,4 +1,6 @@
-namespace WinFormsTestApp
+using WinFormsLibraryVolkov;
+
+namespace WinFormsTestApp
 {
     partial class FormMain
     {
@@ -38,7 +40,7 @@
             buttonClear = new Button();
             buttonAdd = new Button();
             textBoxAdd = new TextBox();
-            SelectionListBox = new WinFormsLibraryVolkov.SelectionListBox();
+            customSelectedCheckedListBox = new WinFormsLibraryVolkov.CustomSelectedCheckedListBox();
             groupBoxData = new GroupBox();
             labelTransportType = new Label();
             labelModel = new Label();
@@ -62,7 +64,7 @@
             // 
             customInputRangeDate.AutoValidate = AutoValidate.Disable;
             customInputRangeDate.CausesValidation = false;
-            customInputRangeDate.Date = new DateTime(2024, 9, 1, 0, 0, 0, 0);
+            customInputRangeDate.Date = new DateTime(2024, 9, 4, 18, 20, 42, 32);
             customInputRangeDate.Location = new Point(15, 19);
             customInputRangeDate.Margin = new Padding(3, 4, 3, 4);
             customInputRangeDate.MaxDate = new DateTime(2024, 12, 31, 0, 0, 0, 0);
@@ -109,7 +111,7 @@
             groupBoxSelected.Controls.Add(buttonClear);
             groupBoxSelected.Controls.Add(buttonAdd);
             groupBoxSelected.Controls.Add(textBoxAdd);
-            groupBoxSelected.Controls.Add(SelectionListBox);
+            groupBoxSelected.Controls.Add(customSelectedCheckedListBox);
             groupBoxSelected.Location = new Point(324, 6);
             groupBoxSelected.Name = "groupBoxSelected";
             groupBoxSelected.Size = new Size(311, 190);
@@ -119,7 +121,7 @@
             // 
             // buttonGetSelected
             // 
-            buttonGetSelected.Location = new Point(192, 144);
+            buttonGetSelected.Location = new Point(174, 139);
             buttonGetSelected.Name = "buttonGetSelected";
             buttonGetSelected.Size = new Size(100, 23);
             buttonGetSelected.TabIndex = 14;
@@ -130,7 +132,7 @@
             // labelSelectedValue
             // 
             labelSelectedValue.AutoSize = true;
-            labelSelectedValue.Location = new Point(192, 111);
+            labelSelectedValue.Location = new Point(178, 111);
             labelSelectedValue.Name = "labelSelectedValue";
             labelSelectedValue.Size = new Size(82, 15);
             labelSelectedValue.TabIndex = 11;
@@ -138,7 +140,7 @@
             // 
             // buttonClear
             // 
-            buttonClear.Location = new Point(192, 81);
+            buttonClear.Location = new Point(174, 81);
             buttonClear.Name = "buttonClear";
             buttonClear.Size = new Size(100, 23);
             buttonClear.TabIndex = 13;
@@ -148,7 +150,7 @@
             // 
             // buttonAdd
             // 
-            buttonAdd.Location = new Point(192, 52);
+            buttonAdd.Location = new Point(174, 52);
             buttonAdd.Name = "buttonAdd";
             buttonAdd.Size = new Size(100, 23);
             buttonAdd.TabIndex = 12;
@@ -158,19 +160,19 @@
             // 
             // textBoxAdd
             // 
-            textBoxAdd.Location = new Point(192, 23);
+            textBoxAdd.Location = new Point(162, 23);
             textBoxAdd.Name = "textBoxAdd";
-            textBoxAdd.Size = new Size(100, 23);
+            textBoxAdd.Size = new Size(140, 23);
             textBoxAdd.TabIndex = 11;
             // 
-            // SelectionListBox
+            // customSelectedCheckedListBox
             // 
-            SelectionListBox.Location = new Point(36, 19);
+            customSelectedCheckedListBox.Location = new Point(6, 19);
-            SelectionListBox.Margin = new Padding(3, 4, 3, 4);
+            customSelectedCheckedListBox.Margin = new Padding(3, 4, 3, 4);
-            SelectionListBox.Name = "SelectionListBox";
+            customSelectedCheckedListBox.Name = "customSelectedCheckedListBox";
-            SelectionListBox.SelectedValue = "";
+            customSelectedCheckedListBox.SelectedElement = "";
-            SelectionListBox.Size = new Size(150, 157);
+            customSelectedCheckedListBox.Size = new Size(150, 157);
-            SelectionListBox.TabIndex = 0;
+            customSelectedCheckedListBox.TabIndex = 0;
             // 
             // groupBoxData
             // 
@@ -283,7 +285,7 @@
             Visual.Controls.Add(groupBoxSelected);
             Visual.Location = new Point(4, 24);
             Visual.Name = "Visual";
-            Visual.Padding = new Padding(3, 3, 3, 3);
+            Visual.Padding = new Padding(3);
             Visual.Size = new Size(645, 438);
             Visual.TabIndex = 0;
             Visual.Text = "Visual";
@@ -320,7 +322,7 @@
         private Button buttonClear;
         private Button buttonAdd;
         private TextBox textBoxAdd;
-        private WinFormsLibraryVolkov.SelectionListBox SelectionListBox;
+        private WinFormsLibraryVolkov.CustomSelectedCheckedListBox customSelectedCheckedListBox;
         private GroupBox groupBoxData;
         private WinFormsLibraryVolkov.CustomTreeCell customTreeCell;
         private Button buttonGetFromTree;

VolkovLabs/WinFormsTestApp/FormMain.cs

@@ -25,7 +25,7 @@ namespace WinFormsTestApp
         {
             InitializeComponent();
             var list = new List<string>() { "Значение 1", "Значение 2", "Значение 3", "Значение 4", "Значение 5" };
-            SelectionListBox.PopulateList(list);
+            customSelectedCheckedListBox.PopulateList(list);
 
             comboBoxTransportType.Items.Add("Наземный транспорт");
             comboBoxTransportType.Items.Add("Воздушный транспорт");
@@ -54,7 +54,11 @@ namespace WinFormsTestApp
 
         private void buttonCheck_Click(object sender, EventArgs e)
         {
-            // доделать
+            labelCheckValue.Text = customInputRangeDate.Date.ToString();
+            if (labelCheckValue.Text == "")
+            {
+                labelCheckValue.Text = customInputRangeDate.Error;
+            }
         }
 
         private void textBoxMin_KeyPress(object sender, KeyPressEventArgs e)
@@ -77,17 +81,33 @@ namespace WinFormsTestApp
 
         private void buttonAdd_Click(object sender, EventArgs e)
         {
-            
+            string newItem = textBoxAdd.Text.Trim();
+
+            if (!string.IsNullOrEmpty(newItem))
+            {
+                if (!customSelectedCheckedListBox.SelectedElement.Equals(newItem))
+                {
+                    if (customSelectedCheckedListBox.SelectedElement != string.Empty)
+                    {
+                        customSelectedCheckedListBox.SelectedElement = newItem;
+                    }
+                    else
+                    {
+                        customSelectedCheckedListBox.AddItem(newItem);
+                        customSelectedCheckedListBox.SelectedElement = newItem;
+                    }
+                }
+            }
         }
 
         private void buttonClear_Click(object sender, EventArgs e)
         {
-            SelectionListBox.ClearList();
+            customSelectedCheckedListBox.ClearList();
         }
 
         private void buttonGetSelected_Click(object sender, EventArgs e)
         {
-            labelSelectedValue.Text = SelectionListBox.SelectedValue;
+            labelSelectedValue.Text = customSelectedCheckedListBox.SelectedElement;
             if (labelSelectedValue.Text == "")
             {
                 labelSelectedValue.Text = "Значение \nне выбрано";