无法将类型 ('string'、'string') 隐式转换为 System.Net.ICredentialsByHost

Question

所以我尝试创建一个电子邮件发件人并提供我的帐户信息，但出现了这个错误：

Cannot implicitly convert type ('string', 'string') to System.Net.ICredentialsByHost.

这是代码。

SmtpClient SmtpServer = new SmtpClient("smpt.gmail.com", 587);

SmtpServer.Credentials = ("username", "password"); # The email and password were lighted up with red
MailMessage Mail = new MailMessage();
Mail.From = new MailAddress("from");

出于显而易见的原因，我更改了电子邮件和密码。

Answer 1

您正在尝试将 ValueTuple 转换为 ICredentialsByHost。需要构造一个新的NetworkCredential实例并在SmtpServer中设置：

NetworkCredential credentials = new NetworkCredential("username", "password");  
SmtpServer.Credentials = credentials;

Answer 2

SmtpServer.Credentials 属性需要一个来自 ICredentialsByHost 接口的对象。 ("username", "password") 无法隐式转换为 ICredentialsByHost 接口的对象。

您可以像这样使用 NetworkCredential class

SmtpServer.Credentials = new System.Net.NetworkCredential("username", "password");

见this answer

无法将类型 ('string'、'string') 隐式转换为 System.Net.ICredentialsByHost

Cannot implicitly convert type ('string', 'string') to System.Net.ICredentialsByHost

.net

c#

email

system.net.mail