如何从电子邮件地址中查找用户和主机（字符串不是MailAddress） [英] How to find User and Host from an email address (string not MailAddress)

问题描述

我需要从给定的电子邮件地址中找到主机名和用户名。

如果我可以完成此任务，我正在编写要上传的库/控件集。

这是我需要找到的一个例子：

假设我们有我的电子邮件：[e-mail]

'@'符号分隔用户来自主机名'gmail.com'的'shelby.p67'。

问题：

我正在为控件构建一个类而不想使用System .Net框架提供的.Net.Mail.MailAddress类。第三方图书馆不会这样做，因为这只是我不知道正常表达的问题。

I need to find the Host Name and Username from a given email address.
I'm writing a library/control set to upload if I can finish this task.
Here's an example of what I need to find:
Say we have my email: [e-mail]
The '@' symbol seperates the the user 'shelby.p67' from the host name 'gmail.com'.
Problem:
I'm building a class for a control and don't want to use System.Net.Mail.MailAddress class that the .Net framework provides. Third party libraries won't do because this is a matter of me just not knowing RegularExpressions aswell as I thought.

推荐答案

我认为这有效，而不是100％肯定。

I think this works, not 100% sure.

public string Address
        {
            get
            {
                if (_user != null && _host != null)
                    return _user + "@" + _host;
                else
                    return _address;
            }
            set
            {
                _address = value;
                if (IsValidEmail(_address))
                {
                    int atIndex = _address.IndexOf('@');
                    _user = _address.ToString().Substring(0,atIndex);
                    _host = _address.ToString().Substring(atIndex, _address.Length - atIndex);
                }
                else
                    _user = _host = null;
            }
        }

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