string res = "abc, , ,_ ,_,c,b,c ,abde,r.e";
char[] chs = new char[] { ‘ ‘, ‘.‘, ‘_‘, ‘,‘ };//不想要的分割符
string[] strnew = res.Split(new char[] { ‘ ‘, ‘.‘, ‘_‘, ‘,‘ }, StringSplitOptions.RemoveEmptyEntries);
原文：http://www.cnblogs.com/yzc19838458/p/4281988.html