C#中字符串中的字符左侧

Question

如何从C#中的emailID字符串"feedback@abc.com"获取"@"字符的左侧

谢谢

Answer 1

string email = "feedback@abc.comm";
int index = email.IndexOf("@");
string user = (index > 0 ? email.Substring(0, index) : "");

Answer 2

string username = new System.Net.Mail.MailAddress("feedback@abc.com").User;

Answer 3

var email = "feedback@abc.com";
var name = email.Substring(0, email.IndexOf("@"));

您需要进行一些完整性检查，例如确保它不为null并确实找到“ @”符号。