Implement INotifyPropertyChanged in Windows Forms and GridView

The INotifyPropertyChanged interface is used to notify clients, typically binding clients, that a property value has changed.

In the below example, we have a form that contain a gridview, which bind a list of Contact objects.

Contact Class
——————————

This class contain a public property called Name. This class also implement the interface INotifyPropertyChanged which is present in System.ComponentModel.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel;

namespace WinFormInotyFy
{
    public class Contact : INotifyPropertyChanged
    {
        private string _name;

        public string Name
        {
            get { return _name; }
            set { _name = value; OnPropertyChanged(this, "Name"); }
        }
              
        
        public event PropertyChangedEventHandler PropertyChanged;

        private void OnPropertyChanged(object sender,string propertyName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(sender,new PropertyChangedEventArgs(propertyName));
            }
        }
    }
}

Form Class
—————————

Our form contain a gridview. We use BindingSource class and BindingList for data binding purposes. BindingList is a part of System.ComponentModel.

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.Threading.Tasks;
namespace WinFormInotyFy
{
    public partial class Form1 : Form
    {
                
        BindingSource bSource = new BindingSource();
        BindingList<Contact> contacts = new BindingList<Contact>();
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {                        
            contacts.Add(new Contact() { Name="vivek" });
            contacts.Add(new Contact() { Name = "vivek" });
            contacts.Add(new Contact() { Name = "vivek" });
            contacts.Add(new Contact() { Name = "vivek" });
            contacts.Add(new Contact() { Name = "vivek" });
            bSource.DataSource = contacts;
            gridControl1.DataSource = bSource;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            foreach (Contact c in contacts)
            {
                c.Name += "1";
              
            }
           
        }
              
    }
}