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    ：[e-mail]

 /// 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 = ;

             mDataGridView.Top = ;

             //初始化mAddItemBtn按钮。

             this.mAddItemBtn = new Button();

             mAddItemBtn.Text = "Add People";

             mAddItemBtn.AutoSize = true;

             mAddItemBtn.Left = ;

             mAddItemBtn.Top = ;

             mAddItemBtn.Click += this.mAddItemBtn_Click;

             //初始化mDeleteItemBtn按钮

             mDeleteItemBtn = new Button();

             mDeleteItemBtn.Text = "Delete Item";

             mDeleteItemBtn.AutoSize = true;

             mDeleteItemBtn.Left = ;

             mDeleteItemBtn.Top = ;

             mDeleteItemBtn.Click += mDeleteItemBtn_Click;

             //初始化mChangeItemValueBtn按钮。

             mChangeItemValueBtn = new Button();

             mChangeItemValueBtn.Text = "Change Item Value";

             mChangeItemValueBtn.AutoSize = true;

             mChangeItemValueBtn.Left = ;

             mChangeItemValueBtn.Top = ;

             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", ));

             Peoples.Add(new People("李四", "上海", ));

             Peoples.Add(new People("王五", "深圳", ));

             //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", ));

         }

         private void mDeleteItemBtn_Click(object sender, EventArgs e)

         {

             if (this.Peoples.Count > )

             {

                 this.Peoples.RemoveAt();

             }

         }

         private void mChangeItemValueBtn_Click(object sender, EventArgs e)

         {

             if (Peoples.Count > )

             {

                 this.Peoples[].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 > )

             {

                 this.Peoples[].Age = Peoples[].Age + ;

                 //this.Peoples.ResetItem(1);//引发改变通知

             }

         }

     }

 }

Form1.cs

 ///****************************************************************************

 /// CLR版本     ：4.0.30319.42000

 /// 邮    箱    ：[e-mail]

 /// 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

     }

 }

People.cs