建立自訂類別，供GridControl讀取用

Dto.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace RuyutDXApplication1
{
    class Dto
    {
        private string _name;
        private List<Item> items = new List<Item>();
        private bool _select;

        public string Name
        {
            get => _name;
            set => _name = value;
        }

        public List<Item> Items
        {
            get => items;
            set => items = value;
        }

        public bool Select
        {
            get => _select;
            set => _select = value;
        }

        public class Item
        {
            private string _key;
            private string _value;

            public Item(string key, string value)
            {
                _key = key;
                _value = value;
            }

            public string Key
            {
                get => _key;
                set => _key = value;
            }

            public string Value
            {
                get => _value;
                set => _value = value;
            }
        }
    }
}

Form1.cs

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;

namespace RuyutDXApplication1
{
    public partial class Form1 : DevExpress.XtraEditors.XtraForm
    {
        List<Dto> dtoList = new List<Dto>();

        public Form1()
        {
            InitializeComponent();

            Dto dto = new Dto();
            dto.Name = "testName1";
            dto.Select = true;
            dto.Items.Add(new Dto.Item("key1", "value1"));
            dto.Items.Add(new Dto.Item("key2", "value2"));
            dtoList.Add(dto);


            gridControl1.DataSource = dtoList; //綁定資料

            //更新資料
            BindingSource bdSource = new BindingSource();
            bdSource.DataSource = dtoList;
            gridControl1.DataSource = bdSource;
        }
    }
}