combox的键值对应用： KeyValuePair<TKey, TValue>

combox的item列表里存在字符,如何将多个字符与序号0123。。。对应？
键值对  KeyValuePair<TKey, TValue> 就很好地帮我们解决了问题。

举个栗子：

private void Form1_Load(object sender, EventArgs e)
        {

            setComboxItemData(comboBox1,new int[]{0,1,2,3,4,5});
        }
 private void setComboxItemData(ComboBox cb, int[] data)
        {
            cb.DisplayMember="key";
            cb.ValueMember = "value";
            System.Diagnostics.Debug.Assert(cb.Items.Count==data.Length);
            List<KeyValuePair<string, int>> listItem= new List<KeyValuePair<string, int>>();;
            for (int i = 0; i < cb.Items.Count; i++)
            {

                  //KeyValuePair<string, int> Item = new KeyValuePair<string,int>(cb.Items[i].ToString(),data[i]);
                  //cb.Items[i] = Item;

                listItem.Add(new KeyValuePair<string,int>(cb.Items[i].ToString(), data[i]));

            }
            cb.DataSource = listItem;
           
            System.Diagnostics.Debug.Assert(cb.DataSource != null);
        }
 private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            KeyValuePair<string,int> key=(KeyValuePair<string,int>)(comboBox1.SelectedItem);
            int index = key.Value;
            string name = key.Key;
        }

这样：在comboBox1的selected事件中 通过读取选择的item 就可知道选择了第几项