WinForm DataGridView双向数据绑定

程序目标：

　　实现DataGridView与BindingList<T>双向绑定。用户通过DataGridView修改值后立即更新BindList对象的值，代码修改BindList后立即更新DataGridView的显示。

实现环境：vs2017 C# WinForm

程序完整代码包：https://pan.baidu.com/s/1LLUxL1UyqNWkXkPF_LuEig

主要代码：

///****************************************************************************
/// CLR版本     ：4.0.30319.42000
/// 邮    箱    ：282780854@qq.com
/// 博    客    ：https://www.cnblogs.com/it89/
/// 创 建 者    ：龙腾虎跃
/// 创建日期    ：2019/1/15 21:02:04 
/// 功能描述    ：
/// 使用说明    ：
///****************************************************************************
using System;
using System.ComponentModel;
using System.Windows.Forms;

namespace TestDataGridViewBind
{
    public partial class Form1 : Form
    {
        private DataGridView mDataGridView;
        //private BindingSource mBindingSource; //绑定方式一需要的。
        private Button mAddItemBtn;
        private Button mChangeItemValueBtn;
        private Button mDeleteItemBtn;

        public BindingList<People> Peoples { get; set; }

        public Form1()
        {
            this.Load += this.Form1_Load;
            InitializeComponent();
        }
        public void Form1_Load(object sender, EventArgs e)
        {
            //初始化mDataGridView对象
            mDataGridView = new DataGridView();
            mDataGridView.AutoSize = true;
            mDataGridView.Left = 10;
            mDataGridView.Top = 40;

            //初始化mAddItemBtn按钮。
            this.mAddItemBtn = new Button();
            mAddItemBtn.Text = "Add People";
            mAddItemBtn.AutoSize = true;
            mAddItemBtn.Left = 30;
            mAddItemBtn.Top = 10;
            mAddItemBtn.Click += this.mAddItemBtn_Click;

            //初始化mDeleteItemBtn按钮
            mDeleteItemBtn = new Button();
            mDeleteItemBtn.Text = "Delete Item";
            mDeleteItemBtn.AutoSize = true;
            mDeleteItemBtn.Left = 120;
            mDeleteItemBtn.Top = 10;
            mDeleteItemBtn.Click += mDeleteItemBtn_Click;

            //初始化mChangeItemValueBtn按钮。
            mChangeItemValueBtn = new Button();
            mChangeItemValueBtn.Text = "Change Item Value";
            mChangeItemValueBtn.AutoSize = true;
            mChangeItemValueBtn.Left = 220;
            mChangeItemValueBtn.Top = 10;
            mChangeItemValueBtn.Click += this.mChangeItemValueBtn_Click;

            //初始化Form1。
            this.Controls.Add(mDataGridView);
            this.Controls.Add(mAddItemBtn);
            this.Controls.Add(mDeleteItemBtn);
            this.Controls.Add(mChangeItemValueBtn);
            this.AutoSize = true;
            this.Text = "DataGridView object binding demo";

            //初始化Peoples对象。
            Peoples = new BindingList<People>();
            Peoples.Add(new People("张三", "北京", 25));
            Peoples.Add(new People("李四", "上海", 28));
            Peoples.Add(new People("王五", "深圳", 30));

            //绑定方式一：通过BindingSource对象把Peoples绑定到mDataGridView控件。
            //mBindingSource = new BindingSource();
            //mBindingSource.DataSource = Peoples;
            //mDataGridView.DataSource = mBindingSource;

            //绑定方式二：直接通过mDataGridView.DataBindings绑定Peoples。Peoples不能引发改变通知事件，但是People类型继承了INotifyPropertyChanged接口，可以引发改变通知事件。
            mDataGridView.DataBindings.Add("DataSource", this, "Peoples", false, DataSourceUpdateMode.OnPropertyChanged);
        }

        private void mAddItemBtn_Click(object sender, EventArgs e)
        {
            this.Peoples.Add(new People("新人", "湖南", 30));
        }

        private void mDeleteItemBtn_Click(object sender, EventArgs e)
        {
            if (this.Peoples.Count > 0)
            {
                this.Peoples.RemoveAt(0);
            }
        }

        private void mChangeItemValueBtn_Click(object sender, EventArgs e)
        {
            if (Peoples.Count > 0)
            {
                this.Peoples[0].Address = "浙江";
                //如果People没有继承INotifyPropertyChanged接口，则需要下面注释的代码，来引发改变通知事件。
                //this.Peoples.ResetItem(0);//引发改变通知
            }

            if (Peoples.Count > 1)
            {
                this.Peoples[1].Age = Peoples[1].Age + 1;
                //this.Peoples.ResetItem(1);//引发改变通知
            }
        }
    }
}

///****************************************************************************
/// CLR版本     ：4.0.30319.42000
/// 邮    箱    ：282780854@qq.com
/// 博    客    ：https://www.cnblogs.com/it89/
/// 创 建 者    ：龙腾虎跃
/// 创建日期    ：2019/1/15 21:03:04 
/// 功能描述    ：
/// 使用说明    ：
///****************************************************************************
using System;
using System.ComponentModel;
using System.Runtime.CompilerServices;

namespace TestDataGridViewBind
{
    /// <summary>
    /// 
    /// </summary>
    public class People : INotifyPropertyChanged
    {
        #region "Public Section"
        public string Name
        {
            get => mName;
            set { mName = value; NotifyPropertyChanged("Name"); }
        }

        public string Address
        {
            get => mAddresss;
            set { mAddresss = value; NotifyPropertyChanged("Address"); }
        }

        public int Age
        {
            get => mAge;
            set { mAge = value; NotifyPropertyChanged("Age"); }
        }

        public People(string name, string address, int age)
        {
            mName = name;
            mAddresss = address;
            mAge = age;
        }

        public event PropertyChangedEventHandler PropertyChanged;

        #endregion

        #region "Private Section"
        private string mName;
        private string mAddresss;
        private int mAge;

        /// <summary>
        /// 该方法由每个属性Set访问器调用。
        /// </summary>
        /// <param name="propertyName"></param>
        private void NotifyPropertyChanged([CallerMemberName] String propertyName = "")
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        #endregion
    }
}