C# SMTP客户端未转换内联HTML

我在使用SMTP/.NET邮件将内嵌HTML发送到电子邮件时遇到问题。我尝试过标准类和MailDefinition类，但我一直在内联原始代码，而不是翻译的页面

我知道我可能遗漏了一些小东西，下面是我的代码。谢谢

     public static void SendMail(string toAddress,  string subject, string messageBody)
    {
        MailDefinition message = new MailDefinition();
        message.CC = MailCCAddress;
        message.From = "orders@test.com";
        message.Subject = subject;
        message.IsBodyHtml = true;
        ListDictionary replacements = new ListDictionary();

        System.Net.Mail.MailMessage fileMsg;
        fileMsg = message.CreateMailMessage(toAddress, replacements, messageBody, new System.Web.UI.Control());

        string _hostName = HostName;

        SmtpClient client = new SmtpClient(_hostName);
        client.Credentials = CredentialCache.DefaultNetworkCredentials;
        //client.Send(message);
        client.Send(fileMsg);
    }

---

如果这不起作用，那么可能是messageBody有问题。您可以尝试调试代码，看看messageBody是否不是正确的html，或者是否有一些字符被转义。

如果仍然有问题，您可能还希望设置

MailMessage

正文编码。比如说,

//Nick's code
MailMessage mail = new MailMessage("orders@test.com", toAddress, subject, messageBody);
mail.IsBodyHtml = true;

//set encoding
mail.BodyEncoding = Encoding.UTF8; //or SevenBit, etc, whatever is appropriate.

//send
SmtpClient client = new SmtpClient(_hostName);
client.Send(mail);

您还可以使用AlternateViews集合，它可以更好地控制内容的MIME类型（因此您可以将其指定为text/html等）。您还可以使用它来选择性地包括纯文本版本和HTMLversion，如下所示：

//create the mail message
MailMessage mail = new MailMessage("orders@test.com", toAddress) { Subject = subject };

//first we create the Plain Text part
AlternateView plainView = AlternateView.CreateAlternateViewFromString("This is my plain text content, viewable by those clients that don't support html", null, "text/plain");
//then we create the Html part
AlternateView htmlView = AlternateView.CreateAlternateViewFromString("<b>this is bold text, and viewable by those mail clients that support html</b>", null, "text/html");

//add both views
mail.AlternateViews.Add(plainView);
mail.AlternateViews.Add(htmlView);

//send the message as before

//创建邮件消息
MailMessage mail=新的MailMessage（“orders@test.com“，toAddress）{Subject=Subject}；
//首先，我们创建纯文本部分
AlternateView plainView=AlternateView.CreateAlternateView-FromString（“这是我的纯文本内容，可由不支持html的客户端查看”，null，“text/plain”）；
//然后我们创建Html部分
AlternateView htmlView=AlternateView.createAlternateView-FromString（“这是粗体文本，可由支持html的邮件客户端查看”，null，“text/html”）；
//添加两个视图
mail.AlternateViews.Add（plainView）；
mail.AlternateViews.Add（htmlView）；
//像以前一样发送消息

//create the mail message
MailMessage mail = new MailMessage("orders@test.com", toAddress) { Subject = subject };

//first we create the Plain Text part
AlternateView plainView = AlternateView.CreateAlternateViewFromString("This is my plain text content, viewable by those clients that don't support html", null, "text/plain");
//then we create the Html part
AlternateView htmlView = AlternateView.CreateAlternateViewFromString("<b>this is bold text, and viewable by those mail clients that support html</b>", null, "text/html");

//add both views
mail.AlternateViews.Add(plainView);
mail.AlternateViews.Add(htmlView);

//send the message as before