private void InitiaSort(string key)
{
string initia = PinyinHelper.InitiaSort(key);
if (actorNameInitia.ContainsKey(initia))
{
actorNameInitia[initia].Add(key);
}
else
{
List <string> ls = new List <string>();
ls.Add(key);
actorNameInitia.Add(initia, ls);
}
}