使用 SendGrid 发送带附件的电子邮件

 var myMessage = new SendGridMessage();
            myMessage.From = new MailAddress("info@email.com");
            myMessage.AddTo("Cristian <myemail@email.com>");
            myMessage.Subject = user.CompanyName + "has selected you!";
            myMessage.Html = "<p>Hello World!</p>";
            myMessage.Text = "Hello World plain text!";

           // myMessage.AddAttachment("C:	est	est.txt");



            var apiKey = "";
            var transportWeb = new Web(apiKey);
            transportWeb.DeliverAsync(myMessage);

基本上我可以使电子邮件正常工作，而当我尝试添加附件时，它不会发送.我尝试了不同的路径和编写路径的不同方式，我不确定出了什么问题，我发现的每个教程都表明它应该像这样工作.

Basically I can make the email work, and the moment I attempt to add an attachment it doesn't send it. I tried different paths and different ways of writing the path, I am not sure what is going wrong, every single tutorial I have found shows it should work like this.