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

code：

  1 ///****************************************************************************
  2 /// clr版本     ：4.0.30319.42000
  3 /// 邮    箱    ：[e-mail]
  4 /// 博    客    ：https://www.cnblogs.com/it89/
  5 /// 创 建 者    ：龙腾虎跃
  6 /// 创建日期    ：2019/1/15 21:02:04 
  7 /// 功能描述    ：
  8 /// 使用说明    ：
  9 ///****************************************************************************
 10 using system;
 11 using system.componentmodel;
 12 using system.windows.forms;
 13 
 14 namespace testdatagridviewbind
 15 {
 16     public partial class form1 : form
 17     {
 18         private datagridview mdatagridview;
 19         //private bindingsource mbindingsource; //绑定方式一需要的。
 20         private button madditembtn;
 21         private button mchangeitemvaluebtn;
 22         private button mdeleteitembtn;
 23 
 24         public bindinglist<people> peoples { get; set; }
 25 
 26         public form1()
 27         {
 28             this.load += this.form1_load;
 29             initializecomponent();
 30         }
 31         public void form1_load(object sender, eventargs e)
 32         {
 33             //初始化mdatagridview对象
 34             mdatagridview = new datagridview();
 35             mdatagridview.autosize = true;
 36             mdatagridview.left = 10;
 37             mdatagridview.top = 40;
 38 
 39             //初始化madditembtn按钮。
 40             this.madditembtn = new button();
 41             madditembtn.text = "add people";
 42             madditembtn.autosize = true;
 43             madditembtn.left = 30;
 44             madditembtn.top = 10;
 45             madditembtn.click += this.madditembtn_click;
 46 
 47             //初始化mdeleteitembtn按钮
 48             mdeleteitembtn = new button();
 49             mdeleteitembtn.text = "delete item";
 50             mdeleteitembtn.autosize = true;
 51             mdeleteitembtn.left = 120;
 52             mdeleteitembtn.top = 10;
 53             mdeleteitembtn.click += mdeleteitembtn_click;
 54 
 55             //初始化mchangeitemvaluebtn按钮。
 56             mchangeitemvaluebtn = new button();
 57             mchangeitemvaluebtn.text = "change item value";
 58             mchangeitemvaluebtn.autosize = true;
 59             mchangeitemvaluebtn.left = 220;
 60             mchangeitemvaluebtn.top = 10;
 61             mchangeitemvaluebtn.click += this.mchangeitemvaluebtn_click;
 62 
 63             //初始化form1。
 64             this.controls.add(mdatagridview);
 65             this.controls.add(madditembtn);
 66             this.controls.add(mdeleteitembtn);
 67             this.controls.add(mchangeitemvaluebtn);
 68             this.autosize = true;
 69             this.text = "datagridview object binding demo";
 70 
 71             //初始化peoples对象。
 72             peoples = new bindinglist<people>();
 73             peoples.add(new people("张三", "北京", 25));
 74             peoples.add(new people("李四", "上海", 28));
 75             peoples.add(new people("王五", "深圳", 30));
 76 
 77             //绑定方式一：通过bindingsource对象把peoples绑定到mdatagridview控件。
 78             //mbindingsource = new bindingsource();
 79             //mbindingsource.datasource = peoples;
 80             //mdatagridview.datasource = mbindingsource;
 81 
 82             //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。
 83             mdatagridview.databindings.add("datasource", this, "peoples", false, datasourceupdatemode.onpropertychanged);
 84         }
 85 
 86         private void madditembtn_click(object sender, eventargs e)
 87         {
 88             this.peoples.add(new people("新人", "湖南", 30));
 89         }
 90 
 91         private void mdeleteitembtn_click(object sender, eventargs e)
 92         {
 93             if (this.peoples.count > 0)
 94             {
 95                 this.peoples.removeat(0);
 96             }
 97         }
 98 
 99         private void mchangeitemvaluebtn_click(object sender, eventargs e)
100         {
101             if (peoples.count > 0)
102             {
103                 this.peoples[0].address = "浙江";
104                 //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。
105                 //this.peoples.resetitem(0);//引发改变通知
106             }
107 
108             if (peoples.count > 1)
109             {
110                 this.peoples[1].age = peoples[1].age + 1;
111                 //this.peoples.resetitem(1);//引发改变通知
112             }
113         }
114     }
115 }

form1.cs

 1 ///****************************************************************************
 2 /// clr版本     ：4.0.30319.42000
 3 /// 邮    箱    ：[e-mail]
 4 /// 博    客    ：https://www.cnblogs.com/it89/
 5 /// 创 建 者    ：龙腾虎跃
 6 /// 创建日期    ：2019/1/15 21:03:04 
 7 /// 功能描述    ：
 8 /// 使用说明    ：
 9 ///****************************************************************************
10 using system;
11 using system.componentmodel;
12 using system.runtime.compilerservices;
13 
14 namespace testdatagridviewbind
15 {
16     /// <summary>
17     /// 
18     /// </summary>
19     public class people : inotifypropertychanged
20     {
21         #region "public section"
22         public string name
23         {
24             get => mname;
25             set { mname = value; notifypropertychanged("name"); }
26         }
27 
28         public string address
29         {
30             get => maddresss;
31             set { maddresss = value; notifypropertychanged("address"); }
32         }
33 
34         public int age
35         {
36             get => mage;
37             set { mage = value; notifypropertychanged("age"); }
38         }
39 
40         public people(string name, string address, int age)
41         {
42             mname = name;
43             maddresss = address;
44             mage = age;
45         }
46 
47         public event propertychangedeventhandler propertychanged;
48 
49         #endregion
50 
51         #region "private section"
52         private string mname;
53         private string maddresss;
54         private int mage;
55 
56         /// <summary>
57         /// 该方法由每个属性set访问器调用。
58         /// </summary>
59         /// <param name="propertyname"></param>
60         private void notifypropertychanged([callermembername] string propertyname = "")
61         {
62             propertychanged?.invoke(this, new propertychangedeventargs(propertyname));
63         }
64 
65         #endregion
66     }
67 }

people.cs