using System.Collections.Generic; namespace AntDesign { public class TransferItem { public string Key { get; set; } = ""; public string Title { get; set; } = ""; public string Description { get; set; } = ""; public bool Disabled { get; set; } private readonly IDictionary _properties = new Dictionary(); public object this[string index] { get { return _properties[index]; } set { _properties[index] = value; } } } }