C# ArrayList 与 string、string[] 的转换

1、ArrarList 转换为 string[]

ArrayList list = new ArrayList();

list.Add("aaa");

list.Add("bbb");

//转换成数组

string[] arrString = (string[])list.ToArray(typeof( string));

2、string[] 转换为 ArrarList

ArrayList list = new ArrayList(new string[] { "aaa", "bbb" });

3、ArrayList 转换为 string

ArrayList list = new ArrayList();

list.Add("aaa");

list.Add("bbb");

//转换成数组

string str= string.Join(",", (string[])list.ToArray(typeof( string)));

4、string 转换为 ArrayList

string str="1,2,3,4,5";

ArrayList b = new ArrayList( str.Split(',') );

from:https://www.cnblogs.com/stone_w/archive/2012/03/21/2409357.html