如何在 .NET Core 3.1 和 C# 中使用 SendGrid 在发送 Email 中添加抄送或密送

Question

How do I send an email With CC And BCC? I am using .NET Core 3.1 and wrote this Send method:

public async Task<Response> Send(string ToUser, string Subject, string TextContent, string HtmlContent, string base64context = null, string filename = "")
{
    string apiKey = AppConfiguration.SendGridApiKey;
    SendGridClient client = new SendGridClient(apiKey);
    EmailAddress from = new EmailAddress(AppConfiguration.SendGridFromEmail, AppConfiguration.SendGridFromName);
    EmailAddress toMail = new EmailAddress(ToUser);
    SendGridMessage msg = MailHelper.CreateSingleEmail(from, toMail, Subject, TextContent, HtmlContent);
    if(!string.IsNullOrWhiteSpace(base64context) && !string.IsNullOrWhiteSpace(filename))
    {
        msg.AddAttachment(filename, base64context);
    }

    return await client.SendEmailAsync(msg);
}

Answer 1

As per SendGrid's documentation and source code , here's how:

SendGridMessage msg = new SendGridMessage();
msg.AddCc(new EmailAddress("test1@example.com", "Example User1"));          
msg.AddBcc(new EmailAddress("test2@example.com", "Example User2"));