C#

namespace ExampleConvertList
{
    public partial class Form1 : Form
    {
        private List<TestGridImage> list;

        public Form1()
        {
            InitializeComponent();

            // I want to convert code have got List...
                        list = new List<TestGridImage>()
                       {
                             new TestGridImage() { KeyIndex = 0, KeyIndexAlt = 2 },
                             new TestGridImage() { KeyIndex = 1, KeyIndexAlt = 0 },
                             new TestGridImage() { KeyIndex = 2, KeyIndexAlt = 1 }
                       };
                       this.gridControl1.DataSource = list;

        }
    }

    public class TestGridImage
    {
        private int keyIndex;

        private int keyIndexAlt;

        public int KeyIndex
        {
            get { return keyIndex; }
            set { keyIndex = value; }
        }

        public int KeyIndexAlt
        {
            get { return keyIndexAlt; }
            set { keyIndexAlt = value; }
        }
    }
}