using System;
public class Test
{
public static void Main()
{
string str = @"line 1
line 2
line 3";
Console.WriteLine(Environment.NewLine == "\r\n");
Console.WriteLine(str.Contains(Environment.NewLine));
Console.WriteLine(str.Contains("\r"));
Console.WriteLine(str.Contains("\n"));
}
}
dXNpbmcgU3lzdGVtOwoKcHVibGljIGNsYXNzIFRlc3QKewoJcHVibGljIHN0YXRpYyB2b2lkIE1haW4oKQoJewoJCXN0cmluZyAgc3RyICA9ICBAImxpbmUgMQpsaW5lIDIKbGluZSAzIjsKCQkKCQlDb25zb2xlLldyaXRlTGluZShFbnZpcm9ubWVudC5OZXdMaW5lICA9PSAgIlxyXG4iKTsKCQlDb25zb2xlLldyaXRlTGluZShzdHIuQ29udGFpbnMoRW52aXJvbm1lbnQuTmV3TGluZSkpOwoJCUNvbnNvbGUuV3JpdGVMaW5lKHN0ci5Db250YWlucygiXHIiKSk7CgkJQ29uc29sZS5Xcml0ZUxpbmUoc3RyLkNvbnRhaW5zKCJcbiIpKTsKCX0KfQ==