string str = "abcd \r\n efgh"; //其实还可以使用System.Environment.NewLine来实现 string str = "abcd" + System.Environment.NewLine + "efgh";
string str = "abcd \r\n efgh"; //其实还可以使用System.Environment.NewLine来实现 string str = "abcd" + System.Environment.NewLine + "efgh";