ArrayList arr = new ArrayList();
int[] arrint = arr.ToArray(typeof(int)) as int[];
ArrayList arr = new ArrayList();
int[] arrint ==(int[])arr.ToArray(typeof(System.Int32));
ArrayList arr = new ArrayList();
int[] arrint = arr.ToArray(typeof(int)) as int[];
ArrayList arr = new ArrayList();
int[] arrint ==(int[])arr.ToArray(typeof(System.Int32));