Hi Luis,
Thank you for writing to Aspose support team.
I have analyzed the requirement and observed that there is no direct method to embed bar code images into MailMessage using template engine. However a workaround is given here for your reference.
lucho1981:
- an example on how to include a different Bar-code for each mail merge email utilizing email templates and bulk-send. We are planning on sending less than 1 million emails each with a different Bar-code and additional custom data. Both the Bar-code number and custom data will be stored in a database table-row or view-row
Comments:
Please give a try to the following sample code by using your own DataTable and let us know the feedback:
static private void Email_668794()
{
//Create an instance of DataTable
//Fill a DataTable as data source
DataTable dt = new DataTable();
dt.Columns.Add(“Receipt”, typeof(string));
dt.Columns.Add(“FirstName”, typeof(string));
dt.Columns.Add(“PlainText”, typeof(string));
dt.Columns.Add(“Barcode”, typeof(byte[]));
//Create an instance of DataRow
DataRow dr;
dr = dt.NewRow();
dr[“Receipt”] = “newcustomeronnet@gmail.com>”;
dr[“FirstName”] = “a”;
dr[“PlainText”] = “bc”;
byte[] imageByte1 = {1,2,3,4,5,6,7,8,9,10};//dummy barcode bytes
dr[“Barcode”] = imageByte1;
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[“Receipt”] = “email@domain.com”;
dr[“FirstName”] = “Guangzhou”;
dr[“PlainText”] = “Team”;
byte[] imageByte2 = { 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 };//dummy barcode bytes
dr[“Barcode”] = imageByte2;
dt.Rows.Add(dr);
dr = dt.NewRow();
dr[“Receipt”] = “email.address@domain.com>”;
dr[“FirstName”] = “Kyle”;
dr[“PlainText”] = “Huang”;
byte[] imageByte3 = { 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 };//dummy barcode bytes
dr[“Barcode”] = imageByte3;
dt.Rows.Add(dr);
MailMessageCollection messages = new MailMessageCollection();
foreach (DataRow dataRow in dt.Rows)
{
MailMessage mail = new MailMessage();//You may load some template mail here like MailMessage mail = new MailMessage(“teamplate.msg”);
//Set the content
mail.Subject = "Hello " + dr[“FirstName”];
//Set the addresses
mail.From = new MailAddress(“sender@receiver”);
mail.To.Add(dataRow[“Receipt”].ToString());
//Create the plain text part
//It is viewable by those clients that don’t support HTML
AlternateView plainView =AlternateView.CreateAlternateViewFromString(dr[“PlainText”].ToString(), null,“text/plain”);
//Create the HTML part.
//To embed images, we need to use the prefix ‘cid’ in the img src value.
//The cid value will map to the Content-Id of a Linked resource.
//Thus will map to a LinkedResource with a ContentId of //‘companylogo’.
AlternateView htmlView = AlternateView.CreateAlternateViewFromString(“Here is an embedded image.”, null, “text/html”);
//create the LinkedResource (embedded image)
Stream stream = new MemoryStream((byte[])dr[“Barcode”]);
LinkedResource logo = new LinkedResource(stream, MediaTypeNames.Image.Png);
logo.ContentId = “companylogo”;
//Add the LinkedResource to the appropriate view
mail.LinkedResources.Add(logo);
mail.AlternateViews.Add(plainView);
mail.AlternateViews.Add(htmlView);
messages.Add(mail);
}
try
{
SmtpClient client = new SmtpClient(“smtp.gmail.com”, 587, “testuser”,“password”);
client.SecurityOptions = SecurityOptions.SSLExplicit;
SmtpClient client = GetSmtpClient();
//Send messages in bulk
client.BulkSend(messages);
}
catch (Aspose.Email.Mail.MailException ex)
{
System.Diagnostics.Debug.WriteLine(ex.ToString());
}
catch (SmtpException ex)
{
System.Diagnostics.Debug.WriteLine(ex.ToString());
}
}
lucho1981:
- An example on how to catch all the failures without stopping the email dispatch process until it is done attempting to send all the emails.
Comments:
You may please log the Smtp client activity as given here.
lucho1981:
- An example on how to step one by one (if so desired) to view the merged results (messages with specific details already composed, including bar-code) and so test/approve them before actually dispatching the emails.
Comments:
As mentioned in the first example you may please save/observe all the messages being prepared before sending through BulkSend.
Please feel free to write us back if you have any other query in this regard.
lucho1981: