How to get IFormFile data into stream to add as Email Attachment - email

Question

I have an Email Razor page that accesses a custom method to send and email. All code seems to be correct. The problem I am having is accessing the "IFormFile files". I have tried adding the code to a controller as well as adding the IFormFile files to the custom method. I just can seem to find the right way to hande IFormFile. Below is the code that I currently have. What I am looking for is to see if someone can help me with the IFormFile portion. The information on IFormFile that I have found hasn't helped me so far as it's usually only partial information...I am very new to MVC and IFormFile, so help is greatly appreciated!
private async Task SendEmail()
{
try
{
// create email message
var email = new MimeMessage();
email.From.Add(MailboxAddress.Parse(sender));
email.To.Add(MailboxAddress.Parse(receiver));
email.Subject = emailsubject;
var multipart = new Multipart("mixed");
multipart.Add(new TextPart(TextFormat.Html) { Text = emailMessage });
foreach (var attachment in file)
{
var content = new MemoryStream();
attachment.CopyTo(content);
content.Position = 0;
var contentType = ContentType.Parse(attachment.ContentType);
var part = new MimePart(contentType.MimeType)
{
FileName = Path.GetFileName(attachment.FileName),
ContentTransferEncoding = ContentEncoding.Base64,
Content = new MimeContent(content),
};
multipart.Add(part);
}
email.Body = multipart;
//email.Body = new TextPart(TextFormat.Html) { Text = emailMessage};
// send email
using var smtp = new SmtpClient();
smtp.Connect(outgoingServer, outgoingPort, SecureSocketOptions.Auto);
smtp.Authenticate(userName, userPassword);
smtp.Send(email);
smtp.Disconnect(true);
}
catch (Exception ex)
{
NotificationService.Notify(NotificationSeverity.Error, "Send Email Error!", ex.Message, 7000);
}
}