Sending an email with attachment using SendGrid

Question

 var myMessage = new SendGridMessage();
            myMessage.From = new MailAddress(\"info@email.com\");
            myMessage.AddTo(\"Cristian 

        

Answer 1

You can add multiple files

       var msg = MailHelper.CreateSingleEmail(from, to, subject, null, content);

        byte[] byteData = Encoding.ASCII.GetBytes(File.ReadAllText(filePath));
        msg.Attachments = new List<SendGrid.Helpers.Mail.Attachment>
        {
            new SendGrid.Helpers.Mail.Attachment
            {
                Content = Convert.ToBase64String(byteData),
                Filename = "FILE_NAME.txt",
                Type = "txt/plain",
                Disposition = "attachment"
            }
        };

Answer 2

\ it is a escape character

//Initialize with a regular string literal.

myMessage.AddAttachment(@"C:\test\test.txt");

else // Initialize with a verbatim string literal.

myMessage.AddAttachment("C:\\test\\test.txt");

Answer 3

attach blob reference doc using sendgrid

mail.AddAttachment(AzureUploadFileClsName.MailAttachmentFromBlob("DocName20190329141433.pdf"));

common method you can create as below one.

public static Attachment MailAttachmentFromBlob(string docpath)
    {
        CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
        CloudBlobContainer container = blobClient.GetContainerReference(storageContainer);
        CloudBlockBlob blockBlob = container.GetBlockBlobReference(docpath);
        blockBlob.FetchAttributes();
        long fileByteLength = blockBlob.Properties.Length;
        byte[] fileContent = new byte[fileByteLength];
        for (int i = 0; i < fileByteLength; i++)
        {
            fileContent[i] = 0x20;
        }
        blockBlob.DownloadToByteArray(fileContent, 0);

        return new Attachment{ Filename = "Attachmentname",
            Content = Convert.ToBase64String(fileContent),
            Type = "application/pdf",
            ContentId = "ContentId" };

    }

Answer 4

I got it to work, turns out I just needed a virtual path:

myMessage.AddAttachment(Server.MapPath(@"~\img\logo.png"));