如何通过 API C# 和模板将自定义变量添加到 SendGrid 电子邮件

Question

我试图弄清楚如何将变量添加到已在 sendgrid 模板引擎中创建的现有模板（例如：动态 Web 链接或名称），我不确定如何使用 SendGrid C# .NET 库来执行此操作。我想知道是否有人可以帮助我。

// Create the email object first, then add the properties.
SendGridMessage myMessage = new SendGridMessage();

myMessage.AddTo("test@test.com");
myMessage.From = new MailAddress("test@test.com", "Mr test");
myMessage.Subject = " ";

var timestamp = DateTime.Now.ToString("HH:mm:ss tt");
myMessage.Html = "<p></p> ";

myMessage.EnableTemplate("<p> <% body %> Hello</p>");
myMessage.EnableTemplateEngine("9386b483-8ad4-48c2-9ee3-afc7618eb56a");
var identifiers = new Dictionary<String, String>();
identifiers["USER_FULLNAME"] = "Jimbo Jones";
identifiers["VERIFICATION_URL"] = "www.google.com";
myMessage.AddUniqueArgs(identifiers);

// Create credentials, specifying your user name and password.
var credentials = new NetworkCredential("username", "password");
// Create an Web transport for sending email.
var transportWeb = new Web(credentials);
// Send the email.
transportWeb.Deliver(myMessage);

Answer 1

我的电子邮件

Hello -REP-

<%body%>

Fotter

我的 C# 代码

myMessage.AddSubstitution("-REP-", substitutionValues);

工作完美！！！

Answer 2

我找到了解决办法：

replacementKey = "*|VERIFICATION_URL|*";
substitutionValues = new List<string> { VERIFICATION_URL };

myMessage.AddSubstitution(replacementKey, substitutionValues);

Answer 3

我使用了以下方法。请注意，您必须提供 mail.Text 和 mail.Html 值 - 如示例中所示，我使用空字符串和 <p></p> 标记。您的 SendGrid 模板还必须包含默认的 <%body%> 和 <%subject%> 标记，尽管它们将替换为在 mail.Text 和 mail.Html 属性中指定的实际主题和正文值。

public void Send(string from, string to, string subject, IDictionary<string, string> replacementTokens, string templateId)
{
  var mail = new SendGridMessage
  {
    From = new MailAddress(from)
  };

  mail.AddTo(to);
  mail.Subject = subject;

  // NOTE: Text/Html and EnableTemplate HTML are not really used if a TemplateId is specified
  mail.Text = string.Empty;
  mail.Html = "<p></p>";
  mail.EnableTemplate("<%body%>");

  mail.EnableTemplateEngine(templateId);

  // Add each replacement token
  foreach (var key in replacementTokens.Keys)
  {
    mail.AddSubstitution(
      key,
      new List<string>
        {
          replacementTokens[key]
        });
  }

  var transportWeb = new Web("THE_AUTH_KEY");
  var result = transportWeb.DeliverAsync(mail);
}

然后可以这样调用：

Send(
"noreply@example.com", 
"TO_ADDRESS", 
"THE SUBJECT", 
new Dictionary<string, string> { 
{ "@Param1!", "Parameter 1" }, 
{ "@Param2!", "Parameter 2" } }, 
"TEMPLATE_GUID");

Answer 4

做了很多 RND。我下面的代码工作正常并经过测试。

            SendGridMessage myMessage = new SendGridMessage();
            myMessage.AddTo(email);
            myMessage.AddBcc("MyEmail@gmail.com");
            myMessage.AddBcc("EmailSender_CC@outlook.com");
            myMessage.From = new MailAddress("SenderEmail@outlook.com", "DriverPickup");
            //myMessage.Subject = "Email Template Test 15.";
            myMessage.Headers.Add("X-SMTPAPI", GetMessageHeaderForWelcome("MyEmail@Gmail.com", callBackUrl));
            myMessage.Html = string.Format(" ");

            // Create an Web transport for sending email.
            var transportWeb = new Web(SendGridApiKey);

            // Send the email, which returns an awaitable task.
            transportWeb.DeliverAsync(myMessage);

我已经创建了获取 JSON 标头的单独方法

private static string GetMessageHeaderForWelcome(string email, string callBackUrl)
    {

        var header = new Header();
        //header.AddSubstitution("{{FirstName}}", new List<string> { "Dilip" });
        //header.AddSubstitution("{{LastName}}", new List<string> { "Nikam" });
        header.AddSubstitution("{{EmailID}}", new List<string> { email });
        header.AddSubstitution("-VERIFICATIONURL-", new List<string>() { callBackUrl });
        //header.AddSubstitution("*|VERIFICATIONURL|*", new List<string> { callBackUrl });
        //header.AddSubstitution("{{VERIFICATIONURL}}", new List<string> { callBackUrl });
        header.AddFilterSetting("templates", new List<string> { "enabled" }, "1");
        header.AddFilterSetting("templates", new List<string> { "template_id" }, WelcomeSendGridTemplateID);
        return header.JsonString();

    }

下面是我在 HTML Sendgrid 模板中使用的代码。

<div>Your {{EmailID}} register. Please <a class="btn-primary" href="-VERIFICATIONURL-">Confirm email address</a></div>

如果有任何疑问，请告诉我。

对于内联 HTML 替换，您需要使用 -YourKeyForReplace-；对于文本替换，您需要使用 {{UserKeyForReplace}}