Arraylist和其它一维数组的化
ArrayList members = new ArrayList();
object[] values= members.ToArray()
(ClassMember[])values//错误
ClassMember[] values=members.ToArray(typeof(ClassMermber)) as ClassMember[]//真确
//把arraylist转化到字符串数组
ArrayList labarr = new ArrayList();
string[] labels = labarr.ToArray(typeof(string)) as string[];
