Unable to send html file as attachment using SendGrid

Question

I have a code where it will generate an HTML content and saves it in an location as follows

I also tried by manually copying the html text and tried but no luck, I am getting bad request, So can some one help me how to send the framed html content as an attachment using SendGrid. The same piece of code works when I use smtp client with out SendGrid

Here is the updated code, I see a property checked="" when I replace this manually it works but through code I am trying it is not

public static void SendMail()
        {
            try
            {
                var apiKey = ""; //insert your Sendgrid API Key
                var client = new SendGridClient(apiKey);
                var from = new EmailAddress("abc@gmail.com");
                var tosList = new List();
                var ToEMailAddress = "abc@gmail.com";
                if (ToEMailAddress.Contains(";"))
                {
                    foreach (var address in ToEMailAddress.Split(';'))
                    {
                        tosList.Add(new EmailAddress(address));
                    }
                }
                else
                {
                    tosList.Add(new EmailAddress(ToEMailAddress));
                }
                var plainTextContent = string.Empty;
                var htmlContent = "Test Body";
                var subject = "Test Subje";
                var msg = MailHelper.CreateSingleEmailToMultipleRecipients(from, tosList, subject, plainTextContent, htmlContent);
                var fileName = "BmaReport_" + "_" + DateTime.Now.ToString("MMMddyyyyHHmmss") + ".html";
                string content = @"

 Record of report submitted via BMA Reporting Portal at 01:54UTC on 19Aug2022


 Record submitted to BMAReportable Event : Loss of hull integrity


Principal Details
Vessel and Voyage details
 Vessel Name : Test loss  IMO No : 3333333  Vessel Type : Bulk carrier  Flag : Bahamas
 No. of Crew on Board : 1  No. of Passengers : 0  No. of Supernumeraries : 0  Voyage From : Test loss
 Voyage to/ Current port (if alongside) : Test loss  Cargo (if applicable) : 
Reportable Event Details
 Stage of Passage : Anchored Date of Event : 08-01-2022
 Latitude Degree : 33  Latitude Decimal : 33  Latitude Direction : N
 Longitude Degree : 33  Longitude Decimal : 33  Longitude Direction : E What was happening at the time of event (select all that apply) : Ballasting,Bunkering,
Time of Event (ship/local) : 03:33 Time Zone : +6
Brief Description : Test loss
Additional consequences of event
Injured Person(s) :No Pollution :No Missing Person : No Fatality : No Material Damage : No
Environment Details
 Weather : Overcast  Visibility : Poor (Vis 0.5−2nm)  Light : Daylight
 Wind Speed (Beaufort scale) : 1 (1−3 knots)  Wind Direction : N  Sea State : Rippled (0–0.1m)
Contact Details
DPA Contact Detail
Name : Test loss DPA Email : abc.meka@gmail.com DPA Phone No : 1234567890
Master's Contact Details
Name : Test loss DPA Email : abc.meka@gmail.com DPA Phone No : 1234567890
Person Completing Form
Name : Test loss Role : DPA Date : 08-02-2022 Email : abc.meka@gmail.com";
                content = content.Replace(@"checked=""", "checked=''");
                SendGrid.Helpers.Mail.Attachment attachment = new SendGrid.Helpers.Mail.Attachment
                {
                    Filename = fileName,
                    Type = "text/html",
                    //ContentId = "Banner",
                    Content = content,
                    Disposition = "attachment"
                };
                msg.Attachments = new List
            {
                attachment
            };
                var result = Task.Run(() => client.SendEmailAsync(msg)).GetAwaiter().GetResult();
                if (result != null)
                {

                }
            }
            catch (Exception ex)
            {
                if (ex.Message != null)
                {

                }
            }
        }

Also I am not receiving the output as expected when it was processed successfully

Developer · Accepted Answer

Seems like we need convert the string to base64 as per docs and send it. I converted it to base64 and it is working now as expected

https://docs.sendgrid.com/api-reference/mail-send/mail-send

Unable to send html file as attachment using SendGrid

Answers (1)

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