Send email with attachment from a specific url in C#

Question

In my view, users can search for a document and once they get the result, they can click on its id and they can download the document from specific url based on id: http://test.

Answer 1

Consider using Postal It's open source libriary for ASP.Net MVC allowing you to send emails very easy. For example to attach file you can use such code:

dynamic email = new Email("Example");
email.Attach(new Attachment("c:\\attachment.txt"));
email.Send(); 

Also you may want to use HangFire to send email in background, please take a look at the Sending Mail in Background with ASP.NET MVC

Update: In order to get the PDF file path you can use Server.MapPath method to convert virtual path to the corresponding physical directory on the server.

Answer 2

If the PDF file is generated on an external site, you will need to download it in some way, for this you can use WebClient:

var client = new WebClient();

// Download the PDF file from external site (pdfUrl) 
// to your local file system (pdfLocalFileName)
client.DownloadFile(pdfUrl, pdfLocalFileName);  

Then you can use it on Attachment:

attachment = new Attachment(pdfLocalFileName, MediaTypeNames.Application.Pdf);
msg.Attachments.Add(attachment)