Question

是否可以在C＃中使用控制台应用程序中的发送网格？我的代码不起作用，我真的不知道为什么。你可以帮帮我吗？

using System;
using System.Net;
using System.Net.Mail;
using SendGrid;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create the email object first, then add the properties.
            var myMessage = new SendGridMessage();
            myMessage.From = new MailAddress("adresfrom@example.com", "It's me");
            myMessage.AddTo("adressj@gmail.com");
            myMessage.Subject = "Testing the SendGrid Library";
            myMessage.Text = "Content of the e-mail";

            var username = "my_sendgrid_username";
            var password = "my_sendgrid_password";

            var credentials = new NetworkCredential(username, password);

            // Create a Web transport for sending email.
            var transportWeb = new Web(credentials);
            transportWeb.DeliverAsync(myMessage);
            Console.ReadLine();
        }
    }
}

Answer 1

关于代码的几点意见：

您没有等待DeliverAsync（）调用 - 这可能会导致某些问题。这样叫：

await transportWeb.DeliverAsync(mail).ConfigureAwait(true);

纠正我如果我错了，但在Azure上，您无法使用NetworkCredentials，因为它们没有正确发送到SendGrid API。我们使用API密钥来配置transportWeb对象。

请尝试使用此修复代码，并告诉我们它是如何进行的：

var transportWeb = new Web(<your-api-key-here>);
await transportWeb.DeliverAsync(myMessage).ConfigureAwait(true);

Answer 2

实际上试试这个：

    static void Main()
    {
        SendEmail().Wait();
    }

    static async Task SendEmail()
    {
        var myMessage = new SendGridMessage();
        myMessage.From = new MailAddress("from_emal");
        myMessage.AddTo("to_email");
        myMessage.Subject = "Testing the SendGrid Library";
        myMessage.Html = "<p>Hello World!</p>";
        myMessage.Text = "Hello World plain text!";

        var credentials = new NetworkCredential("sendgrid_user", "sendgrid_pass");
        var transportWeb = new Web(credentials);
        await transportWeb.DeliverAsync(myMessage);            
    }

看起来你应该等待DeliveryAsync方法。在Main方法中，当您删除Wait（）时，它不会发送电子邮件。如果您使用Wait（），它将发送。

Answer 3

它在控制台应用程序中有效，但出于某种原因需要这样调用它：

transportWeb.DeliverAsync(msg).Wait()

更多信息：https://github.com/sendgrid/sendgrid-csharp/issues/154

Answer 4

尝试使用SendGrid API并通过HttpClient连接到它：

  using (var client = new HttpClient())
        {
            client.BaseAddress = new Uri("https://api.sendgrid.com");
            var content = new FormUrlEncodedContent(new[] 
        {
            new KeyValuePair<string, string>("api_key", "YOUR PASSWORD"),
            new KeyValuePair<string, string>("api_user", "USER NAME"),
            new KeyValuePair<string, string>("from", "some@body.com"),
            new KeyValuePair<string, string>("to", "some@body.com"),
            new KeyValuePair<string, string>("subject", "Whatever"),
            new KeyValuePair<string,string>("text", "You can use 'html' :)")

        });
            var result = client.PostAsync("/api/mail.send.json", content).Result;
            string resultContent = result.Content.ReadAsStringAsync().Result;
            Debug.WriteLine(resultContent);
        }

改变你的价值观，它为我工作..

在控制台应用程序中使用SendGrid

4 个答案: