datagridview-refresh-bound-data ソースコード全文

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    <UseWindowsForms>true</UseWindowsForms>
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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
    <ItemGroup>
        <Compile Update="Form1.cs">
            <SubType>Form</SubType>
        </Compile>
    </ItemGroup>
</Project>

using System.ComponentModel;

namespace DataGridView_RefreshBoundData
{
    public partial class Form1 : Form
    {
        // DataGridView �Ƀo�C���h���邽�߂̒ʒm�@�\�t�����X�g
        private BindingList<MemberModel> _members = new();

        public Form1()
        {
            InitializeComponent();
            InitializeDataGridView();
        }

        private void InitializeDataGridView()
        {
            // �����f�[�^�����X�g�ɒlj����܂�
            _members.Add(new MemberModel("M001", "�R�c ���Y", "�J����"));
            _members.Add(new MemberModel("M002", "���� �Ԏq", "�c�ƕ�"));

            // DataGridView �̃f�[�^�\�[�X�� BindingList ���w�肵�܂�
            dataGridView1.DataSource = _members;
        }

        private void btnUpdate_Click(object sender, EventArgs e)
        {
            // DataGridView �Ō��ݑI������Ă���s�̃f�[�^�i�I�u�W�F�N�g�j���擾���܂�
            if (dataGridView1.CurrentRow?.DataBoundItem is MemberModel selectedMember)
            {
                // �v���p�e�B�̒l��ύX���܂�
                // INotifyPropertyChanged �̓����ɂ��A���̈�s�ʼn�ʂ������X�V����܂�
                selectedMember.Department = "�C�O���ƕ�";
            }
        }
    }
}

namespace DataGridView_RefreshBoundData
{
    partial class Form1
    {
        /// <summary>
        ///  Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        ///  Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        ///  Required method for Designer support - do not modify
        ///  the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            tableLayoutPanel1 = new TableLayoutPanel();
            dataGridView1 = new DataGridView();
            btnUpdate = new Button();
            tableLayoutPanel1.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)dataGridView1).BeginInit();
            SuspendLayout();
            //
            // tableLayoutPanel1
            //
            tableLayoutPanel1.ColumnCount = 1;
            tableLayoutPanel1.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 50F));
            tableLayoutPanel1.Controls.Add(dataGridView1, 0, 0);
            tableLayoutPanel1.Controls.Add(btnUpdate, 0, 1);
            tableLayoutPanel1.Dock = DockStyle.Fill;
            tableLayoutPanel1.Location = new Point(0, 0);
            tableLayoutPanel1.Name = "tableLayoutPanel1";
            tableLayoutPanel1.RowCount = 2;
            tableLayoutPanel1.RowStyles.Add(new RowStyle(SizeType.Percent, 89.77778F));
            tableLayoutPanel1.RowStyles.Add(new RowStyle(SizeType.Percent, 10.2222223F));
            tableLayoutPanel1.Size = new Size(800, 450);
            tableLayoutPanel1.TabIndex = 0;
            //
            // dataGridView1
            //
            dataGridView1.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize;
            dataGridView1.Dock = DockStyle.Fill;
            dataGridView1.Location = new Point(3, 3);
            dataGridView1.Name = "dataGridView1";
            dataGridView1.RowHeadersWidth = 62;
            dataGridView1.Size = new Size(794, 398);
            dataGridView1.TabIndex = 0;
            //
            // btnUpdate
            //
            btnUpdate.Dock = DockStyle.Fill;
            btnUpdate.Location = new Point(3, 407);
            btnUpdate.Name = "btnUpdate";
            btnUpdate.Size = new Size(794, 40);
            btnUpdate.TabIndex = 1;
            btnUpdate.Text = "データ更新";
            btnUpdate.UseVisualStyleBackColor = true;
            btnUpdate.Click += btnUpdate_Click;
            //
            // Form1
            //
            AutoScaleDimensions = new SizeF(10F, 25F);
            AutoScaleMode = AutoScaleMode.Font;
            ClientSize = new Size(800, 450);
            Controls.Add(tableLayoutPanel1);
            Name = "Form1";
            Text = "Form1";
            tableLayoutPanel1.ResumeLayout(false);
            ((System.ComponentModel.ISupportInitialize)dataGridView1).EndInit();
            ResumeLayout(false);
        }

        #endregion

        private TableLayoutPanel tableLayoutPanel1;
        private DataGridView dataGridView1;
        private Button btnUpdate;
    }
}

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;

namespace DataGridView_RefreshBoundData
{
    public class MemberModel : INotifyPropertyChanged
    {
        // プロパティ変更時に発生するイベント
        public event PropertyChangedEventHandler? PropertyChanged;

        // 自動プロパティ（今回は変更通知が不要な固定値とします）
        public string Id { get; set; }
        public string Name { get; set; }

        // 変更通知が必要なプロパティ（バッキングフィールドを用意します）
        private string _department = string.Empty;
        public string Department
        {
            get => _department;
            set => SetProperty(ref _department, value);
        }

        // コンストラクタ
        public MemberModel(string id, string name, string department)
        {
            Id = id;
            Name = name;
            _department = department;
        }

        // 値が変更された場合にのみイベントを発行するヘルパーメソッド
        protected void SetProperty<T>(ref T storage, T value, [CallerMemberName] string? propertyName = null)
        {
            if (Equals(storage, value)) return;
            storage = value;
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}

namespace DataGridView_RefreshBoundData
{
    internal static class Program
    {
        /// <summary>
        ///  The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            // To customize application configuration such as set high DPI settings or default font,
            // see https://aka.ms/applicationconfiguration.
            ApplicationConfiguration.Initialize();
            Application.Run(new Form1());
        }
    }
}