MVVM WinForms /* simple sample*/

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Collections.ObjectModel;
using System.Collections.Specialized;

namespace WindowsFormsApplication1
{



    public partial class Form1 : Form
    {
        // ObservableCollection<int> collection = new ObservableCollection<int>() { 1, 2, 3 };
        ObservableCollection<Setting> collection = new ObservableCollection<Setting>() {
            new Setting{Key = "key1", Value1 = "value1"},
            new Setting{Key = "key2", Value1 = "value2"},
            new Setting{Key = "key3", Value1 = "value3"},
            new Setting{Key = "key4", Value1 = "value4"}
        };
        Settings settings;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            // listBox1.DataSource = collection;
            listBox2.DataSource = settings = new Settings(collection.ToArray());

            // listBox1.DisplayMember = "Key"; listBox1.ValueMember = "Value";
            // listBox1.DataBindings.Add(".", collection, "");

            // collection.CollectionChanged += new System.Collections.Specialized.NotifyCollectionChangedEventHandler(collection_CollectionChanged);
            settings.CollectionChanged += new System.Collections.Specialized.NotifyCollectionChangedEventHandler(collection_CollectionChanged);

            //foreach (var item in collection) item.PropertyChanged += new PropertyChangedEventHandler(item_PropertyChanged);
            foreach (var item in settings) item.PropertyChanged += new PropertyChangedEventHandler(item_PropertyChanged);

        }

        void item_PropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            // MessageBox.Show(e.PropertyName);

            var id = collection.IndexOf(sender as Setting);


            collection[id] = sender as Setting;

        }

        void collection_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
        {
            switch (e.Action)
            {
                case System.Collections.Specialized.NotifyCollectionChangedAction.Add:

                    MessageBox.Show(e.Action.ToString());
                    break;
                case System.Collections.Specialized.NotifyCollectionChangedAction.Move:

                    MessageBox.Show(e.Action.ToString());
                    break;
                case System.Collections.Specialized.NotifyCollectionChangedAction.Remove:

                    MessageBox.Show(e.Action.ToString());
                    break;
                case System.Collections.Specialized.NotifyCollectionChangedAction.Replace:

                    MessageBox.Show(e.Action.ToString());
                    break;
                case System.Collections.Specialized.NotifyCollectionChangedAction.Reset:

                    MessageBox.Show(e.Action.ToString());
                    break;
                default:
                    break;
            }

            if (sender == collection) { listBox1.DataSource = null; listBox1.DataSource = collection; }
            else if (sender == settings) { listBox2.DataSource = null; listBox2.DataSource = collection; }

            // listBox1.DisplayMember = "Key"; listBox1.ValueMember = "Value";
        }

        private void buttonAdd_Click(object sender, EventArgs e)
        {
            collection.Add(0);
            settings.Add(0);
        }

        private void buttonReplace_Click(object sender, EventArgs e)
        {
            collection[0] = 1;
            settings[0] = 1;
        }

        private void buttonRemove_Click(object sender, EventArgs e)
        {
            collection.RemoveAt(0);
            settings.RemoveAt(0);
        }

        private void buttonMove_Click(object sender, EventArgs e)
        {
            collection.Move(0, 1);
            settings.Move(0, 1);
        }

        private void buttonReset_Click(object sender, EventArgs e)
        {
            collection.Clear();
            settings.Clear();
        }

        private void buttonChange_Click(object sender, EventArgs e)
        {
            collection[0].Value1 = "111";
        }


    }



    public class Settings : ObservableCollection<Setting>
    {
        public Settings(IEnumerable<Setting> items) : base(items)
        {
            foreach (var item in items)
            {
                item.PropertyChanged += new PropertyChangedEventHandler(item_PropertyChanged);
            }
        }

        void item_PropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            OnCollectionChanged(new NotifyCollectionChangedEventArgs(
                NotifyCollectionChangedAction.Replace,
                sender,
                sender,
                this.IndexOf(sender as Setting)));
        }


        public override event System.Collections.Specialized.NotifyCollectionChangedEventHandler CollectionChanged;
        protected override void OnCollectionChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
        {
            // base.OnCollectionChanged(e);

            if (CollectionChanged != null)
            {
                using (BlockReentrancy())
                {
                    CollectionChanged(this, e);
                }
            }

        }
    }



    public class Setting : INotifyPropertyChanged
    {

        string _value;

        public string Key { get; set; }
        public string Value1
        {
            get { return _value; }
            set
            {
                _value = value;

                if (this.PropertyChanged != null)
                    PropertyChanged(this, new PropertyChangedEventArgs(
                        System.Reflection.MethodBase.GetCurrentMethod().Name.Substring(4)
                    )
                );
            }
        }

        public static implicit operator Setting(int a)
        {
            return new Setting { Key = "Key" + a, Value1 = a.ToString() };
        }

        public override string ToString()
        {

            return this.Key + ":" + this.Value1;
        }

        public event PropertyChangedEventHandler PropertyChanged;
    }

}








// Form1.Designer.cs


namespace WindowsFormsApplication1
{
    partial class Form1
    {
        /// <summary>
        /// Требуется переменная конструктора.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Освободить все используемые ресурсы.
        /// </summary>
        /// <param name="disposing">истинно, если управляемый ресурс должен быть удален; иначе ложно.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Код, автоматически созданный конструктором форм Windows

        /// <summary>
        /// Обязательный метод для поддержки конструктора - не изменяйте
        /// содержимое данного метода при помощи редактора кода.
        /// </summary>
        private void InitializeComponent()
        {
            this.buttonAdd = new System.Windows.Forms.Button();
            this.buttonRemove = new System.Windows.Forms.Button();
            this.buttonMove = new System.Windows.Forms.Button();
            this.buttonReplace = new System.Windows.Forms.Button();
            this.buttonReset = new System.Windows.Forms.Button();
            this.listBox1 = new System.Windows.Forms.ListBox();
            this.buttonChange = new System.Windows.Forms.Button();
            this.listBox2 = new System.Windows.Forms.ListBox();
            this.SuspendLayout();
            //
            // buttonAdd
            //
            this.buttonAdd.Location = new System.Drawing.Point(620, 122);
            this.buttonAdd.Name = "buttonAdd";
            this.buttonAdd.Size = new System.Drawing.Size(147, 38);
            this.buttonAdd.TabIndex = 0;
            this.buttonAdd.Text = "Add";
            this.buttonAdd.UseVisualStyleBackColor = true;
            this.buttonAdd.Click += new System.EventHandler(this.buttonAdd_Click);
            //
            // buttonRemove
            //
            this.buttonRemove.Location = new System.Drawing.Point(620, 208);
            this.buttonRemove.Name = "buttonRemove";
            this.buttonRemove.Size = new System.Drawing.Size(150, 66);
            this.buttonRemove.TabIndex = 1;
            this.buttonRemove.Text = "Remove";
            this.buttonRemove.UseVisualStyleBackColor = true;
            this.buttonRemove.Click += new System.EventHandler(this.buttonRemove_Click);
            //
            // buttonMove
            //
            this.buttonMove.Location = new System.Drawing.Point(620, 328);
            this.buttonMove.Name = "buttonMove";
            this.buttonMove.Size = new System.Drawing.Size(169, 56);
            this.buttonMove.TabIndex = 2;
            this.buttonMove.Text = "Move";
            this.buttonMove.UseVisualStyleBackColor = true;
            this.buttonMove.Click += new System.EventHandler(this.buttonMove_Click);
            //
            // buttonReplace
            //
            this.buttonReplace.Location = new System.Drawing.Point(610, 39);
            this.buttonReplace.Name = "buttonReplace";
            this.buttonReplace.Size = new System.Drawing.Size(157, 55);
            this.buttonReplace.TabIndex = 3;
            this.buttonReplace.Text = "Replace";
            this.buttonReplace.UseVisualStyleBackColor = true;
            this.buttonReplace.Click += new System.EventHandler(this.buttonReplace_Click);
            //
            // buttonReset
            //
            this.buttonReset.Location = new System.Drawing.Point(400, 328);
            this.buttonReset.Name = "buttonReset";
            this.buttonReset.Size = new System.Drawing.Size(157, 55);
            this.buttonReset.TabIndex = 4;
            this.buttonReset.Text = "Reset";
            this.buttonReset.UseVisualStyleBackColor = true;
            this.buttonReset.Click += new System.EventHandler(this.buttonReset_Click);
            //
            // listBox1
            //
            this.listBox1.FormattingEnabled = true;
            this.listBox1.Location = new System.Drawing.Point(38, 39);
            this.listBox1.Name = "listBox1";
            this.listBox1.Size = new System.Drawing.Size(159, 225);
            this.listBox1.TabIndex = 5;
            //
            // buttonChange
            //
            this.buttonChange.Location = new System.Drawing.Point(400, 419);
            this.buttonChange.Name = "buttonChange";
            this.buttonChange.Size = new System.Drawing.Size(157, 56);
            this.buttonChange.TabIndex = 6;
            this.buttonChange.Text = "Change";
            this.buttonChange.UseVisualStyleBackColor = true;
            this.buttonChange.Click += new System.EventHandler(this.buttonChange_Click);
            //
            // listBox2
            //
            this.listBox2.FormattingEnabled = true;
            this.listBox2.Location = new System.Drawing.Point(274, 30);
            this.listBox2.Name = "listBox2";
            this.listBox2.Size = new System.Drawing.Size(241, 238);
            this.listBox2.TabIndex = 7;
            //
            // Form1
            //
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(815, 501);
            this.Controls.Add(this.listBox2);
            this.Controls.Add(this.buttonChange);
            this.Controls.Add(this.listBox1);
            this.Controls.Add(this.buttonReset);
            this.Controls.Add(this.buttonReplace);
            this.Controls.Add(this.buttonMove);
            this.Controls.Add(this.buttonRemove);
            this.Controls.Add(this.buttonAdd);
            this.Name = "Form1";
            this.Text = "Form1";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.Button buttonAdd;
        private System.Windows.Forms.Button buttonRemove;
        private System.Windows.Forms.Button buttonMove;
        private System.Windows.Forms.Button buttonReplace;
        private System.Windows.Forms.Button buttonReset;
        private System.Windows.Forms.ListBox listBox1;
        private System.Windows.Forms.Button buttonChange;
        private System.Windows.Forms.ListBox listBox2;
    }
}