string str = "1\r\n2 222";
string[] strlist = str.Split("\r\n".ToCharArray(),StringSplitOptions.RemoveEmptyEntries);
string[] temp = str.Split(new char[] { ‘\r‘, ‘\n‘ }, StringSplitOptions.RemoveEmptyEntries);

原文链接：https://blog.csdn.net/yal179/java/article/details/38689363

C# .Split("\r\n")