从 UWP 应用程序发送邮件时找不到 System.Net.Security

Question

我正在尝试从我的 UWP 应用程序发送电子邮件，这是我收到的错误：

$exception {System.IO.FileNotFoundException: 无法加载文件或 程序集'System.Net.Security，版本=4.0.0.0，文化=中性， PublicKeyToken=b03f5f7f11d50a3a'。系统找不到文件 指定的。文件名：'System.Net.Security，版本=4.0.0.0， 文化=中性，PublicKeyToken=b03f5f7f11d50a3a' 在 App1.glavnookno.d__10.MoveNext()} System.IO.FileNotFoundException

这是我的代码：

    try
        {
            //From Address
            string FromAddress = "rene.vucko@gmail.com";
            string FromAdressTitle = "Expenses to pay";
            //To Address  
            string ToAddress = "rene.vucko@gmail.com";
            string ToAdressTitle = "Microsoft ASP.NET Core";
            string Subject = "Hello World - Sending email using ASP.NET Core 1.1";
            string BodyContent = "ASP.NET Core was previously called ASP.NET 5. It was renamed in January 2016. It supports cross-platform frameworks ( Windows, Linux, Mac ) for building modern cloud-based internet-connected applications like IOT, web apps, and mobile back-end.";

            //Smtp Server  
            string SmtpServer = "smtp.gmail.com";
            //Smtp Port Number  
            int SmtpPortNumber = 587;

            var mimeMessage = new MimeMessage();
            mimeMessage.From.Add(new MailboxAddress(FromAdressTitle, FromAddress));
            mimeMessage.To.Add(new MailboxAddress(ToAdressTitle, ToAddress));
            mimeMessage.Subject = Subject;
            mimeMessage.Body = new TextPart("plain")
            {
                Text = BodyContent

            };

            using (var client2 = new SmtpClient())
            {

                client2.Connect(SmtpServer, SmtpPortNumber, false);
                // Note: only needed if the SMTP server requires authentication  
                // Error 5.5.1 Authentication   
                client2.Authenticate("rene.vucko@gmail.com", "y");
                client2.Send(mimeMessage);
                Console.WriteLine("The mail has been sent successfully !!");
                Console.ReadLine();
                client2.Disconnect(true);

            }
        }
        catch(Exception ex)
        {
            throw ex;
        }

我启用了不太安全的应用程序，并且我没有两步验证。我正在使用 NUGET "MailKit" 发送这些邮件，因为我无法添加对 system.web.mail 的引用，因为 VS2017 说它在我的系统中不存在。

这些是我正在使用的：

using MailKit.Net.Smtp;
using MimeKit;

我的错误：

Answer 1

已解决，改用 EAMail。我猜这个不适用于 VS2017。