C# と VB.NET の質問掲示板

■No99922 (ゆい さん) に返信

No99925 のサンプルコードを載せておきます。

Form にはデザイン画面で Button, DataGridView, BindingSource をドラッグ＆ドロップして、
イベントハンドラを設定しています。

using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace WindowsFormsApp1
{
    public partial class Form5 : Form
    {
        private DataGridViewTextBoxColumn column1;
        private DataGridViewTextBoxColumn column2;
        private DataGridViewTextBoxColumn column3;
        private DataGridViewButtonColumn column4;

        public Form5()
        {
            InitializeComponent();

            this.column1 = new DataGridViewTextBoxColumn();
            this.column2 = new DataGridViewTextBoxColumn();
            this.column3 = new DataGridViewTextBoxColumn();
            this.column4 = new DataGridViewButtonColumn();
            this.column4.UseColumnTextForButtonValue = true;
            this.column4.Text = "ボタン";

            this.dataGridView1.Columns.AddRange(
                new DataGridViewColumn[] { this.column1, 
                                           this.column2, 
                                           this.column3, 
                                           this.column4 });

            this.column1.DataPropertyName = "Name";
            this.column1.HeaderText = "名前";

            this.column2.DataPropertyName = "Age";
            this.column2.HeaderText = "年齢";

            this.column3.DataPropertyName = "Address";
            this.column3.HeaderText = "住所";

            this.column4.HeaderText = "詳細情報";

            this.dataGridView1.DataSource = this.bindingSource1;
        }

        private void Form5_Load(object sender, EventArgs e)
        {            
            
        }

        private void button1_Click(object sender, EventArgs e)
        {
            var list = new List<UserInfo>
            {
                new UserInfo{ Name="Mike", Age=25, Address="Maryland" },
                new UserInfo{ Name="John", Age=30, Address="Virginia" },
                new UserInfo{ Name="Tom", Age=23, Address="West Virginia" }
            };

            this.bindingSource1.DataSource = list;
        }

        private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            int index = e.RowIndex;
            // 押下された行の各項目を別のテキストボックスに書き出す
        }
    }

    public class UserInfo
    {
        public string Name { get; set; }
        public int Age { get; set; }
        public string Address { get; set; }
    }
}