public class KeyValue
    {
        private int key;
        private string value;
        public int Key
        {
            get { return key; }
            set { value = key; }
        }
        public string Value
        {
            get { return value; }
            set { value = this.value; }
        }
        public KeyValue(int key, string value)
        {
            this.key = key;
            this.value = value;
        }
    }

List<KeyValue> data = new List<KeyValue>(){
                new KeyValue(1,"文本1"),
                new KeyValue(2,"文本2"),
                new KeyValue(3,"文本3"),
                
            };
            type_kind.DataSource = data;
            type_kind.DisplayMember = "Value";
            type_kind.ValueMember = "key";