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Microsoft Graph upload large files

I am developing an aplication that send and email with one or multiple attachments via Microsoft Graph, but when try to upload file send me an error: ": Invalid total bytes specified in the Content-Range header"
i asume that i must specifi Range Value in same where, but no idea.
This is my code:
private static async void SenMailUsingMicrosoftGraph(List<String>Destinations, List<String>Cc, string HidenCopy, string Body, string Title, List<FileInfo>Filess);
{
ClientSecretCredential credential = new ClientSecretCredential("MyTenantID", "MyClientId", "MyClientSecret");
List<Recipient> recipientsDestinatarios = new List<Recipient>();
List<Recipient> recipientsCopias = new List<Recipient>();
foreach (var c in Destinations)
{
recipientsDestinatarios.Add(
new Recipient
{
EmailAddress = new EmailAddress
{
Address = c
}
});
}
foreach (var mail in Cc)
{
recipientsCopias.Add(
new Recipient
{
EmailAddress = new EmailAddress
{
Address = mail
}
});
}
#endregion
var message = new Microsoft.Graph.Message
{
Subject = Title,
Body = new ItemBody
{
ContentType = BodyType.Html,
Content = Body
},
ToRecipients = recipientsDestinatarios
,
CcRecipients = recipientsCopias
,
BccRecipients = new List<Recipient>()
{
new Recipient
{
EmailAddress=new EmailAddress{Address=Hiden}
}
}
};
GraphServiceClient graphClient = new GraphServiceClient(credential);
#endregion
#region adjuntar ficheros
var msgResult = await graphClient.Users["myemail#mycompany.com"].MailFolders.Drafts.Messages
.Request()
.WithMaxRetry(9)
.AddAsync(message);
foreach (var Archivo in Filess)
{
var attachmentContentSize = Archivo.Length;
var attachmentItem = new AttachmentItem
{
AttachmentType = AttachmentType.File,
Name = Archivo.Name,
Size = attachmentContentSize,
};
//initiate the upload session for large files
var uploadSession = await graphClient.Users["myemail#mycompany.com"].Messages[msgResult.Id].Attachments
.CreateUploadSession(attachmentItem)
.Request()
.PostAsync();
var maxChunkSize = 1024 * 320;
var allBytes = System.IO.File.ReadAllBytes(Archivo.FullName);
using (var stream = new MemoryStream(allBytes))
{
stream.Position = 0;
LargeFileUploadTask<FileAttachment> largeFileUploadTask = new LargeFileUploadTask<FileAttachment>(uploadSession, stream, maxChunkSize);
await largeFileUploadTask.UploadAsync();
}
}
await graphClient.Users["myemail#mycompany.com"].Messages[msgResult.Id].Send().Request().PostAsync();
}
I try something like this:
var content = new System.Net.Http.Headers.ContentRangeHeaderValue(0,MyFile.Length-1,MyFile.Length);
but i dont now how to asign this content variable, i think that must go in the uploadSession but dont know how.
------------------------------------EDIT------------------------------
included a Picture where see that the size of the attachment is not zero

How to send personalized emails using Sendgrid API C#

I want to have one API call send to a list of recipients and customize each email. I have the general code worked out. The substitutions are working. But this only sends to the first email address even though I have 2 personalizations with different email addresses.
SendGridClient client = new SendGridClient(apiKey);
SendGridMessage msg = new SendGridMessage();
msg.SetFrom(new EmailAddress(from, fromName));
msg.Subject = subject;
msg.HtmlContent = some content with replacement fields
List<string> recipients = new List<string>();
recipients.Add("some address");
recipients.Add("second address");
msg.Personalizations = new List<Personalization>();
for (int x = 0; x < recipients.Count; x++) {
if (recipients[x].IndexOf("#") > -1) {
//msg.AddTo(recipients[x]);
Personalization personalization = new Personalization();
personalization.Tos = new List<EmailAddress> { new EmailAddress(recipients[x]) };
Dictionary<string, string> subs = new Dictionary<string, string>();
subs.Add("[Verification Code]", "ABC123");
subs.Add("[User Name]", "Mark");
personalization.Substitutions = subs;
msg.Personalizations.Add(personalization);
addressAdded = true;
}
}
Response response = await client.SendEmailAsync(msg).ConfigureAwait(false);
What am I doing wrong? Is there some documentation on this?

IsValidEmail Method:
public static bool IsValidEmail(string email)
{
try
{
var addr = new System.Net.Mail.MailAddress(email);
return addr.Address == email;
}
catch
{
return false;
}
}
SendEmail Method:
SendGridClient client = new SendGridClient(apiKey);
SendGridMessage msg = new SendGridMessage();
msg.SetFrom(new EmailAddress(from, fromName));
msg.Subject = subject;
msg.HtmlContent = "<strong> C# is the Best! </strong>";
List<string> recipients = new List<string>();
recipients.Add("some address");
recipients.Add("second address");
msg.Personalizations = new List<Personalization>();
foreach (string recipient in recipients)
{
if (IsValidEmail(recipient))
{
Personalization personalization = new Personalization();
personalization.Tos = new List<EmailAddress>();
personalization.Tos.Add(new EmailAddress(recipient));
msg.Personalizations.Add(personalization);
Dictionary<string, string> subs = new Dictionary<string, string>();
subs.Add("{{UserName}}", "Mark");
subs.Add("{{VerificationCode}}","ABC123");
personalization.Substitutions = subs;
msg.Personalizations.Add(personalization);
addressAdded = true;
}
// This Worked
if (addressAdded)
{
Response response = await client.SendEmailAsync(msg);
Console.WriteLine(response.StatusCode);
Console.WriteLine(response.Headers.ToString());
Console.WriteLine(response.Body.ReadAsStringAsync().Result);
}
}

Send Email Marked High Importance via EWS API

Attempting to send an email marked as high importance via EWS API. Getting multiple compile errors and or issues stating missing assembly. Any help would be appreciated. Using the following namespaces:
System
System.Drawing
System.Data
Microsoft.Exchange.WebServices.Data
System.Collections.Generic
System.Web
System.Text
System.IO
System.Linq
I've referenced all the MS Docs on the EWS API and aware that the importance is an enum but unsure of the class to use to set the argument;
https://learn.microsoft.com/en-us/dotnet/api/microsoft.exchange.webservices.data?view=exchange-ews-api
https://learn.microsoft.com/en-us/previous-versions/office/exchange-server-api/aa564670(v=exchg.150)
https://learn.microsoft.com/en-us/dotnet/api/microsoft.exchange.webservices.data.importance?view=exchange-ews-api
I've tried multiple bits of syntax e.g. email.Importance = 2 but getting enum conversion error.
Current code is as follows:
Success = true;
ErrorMessage = "";
try {
if (To == "" && CC == "" && BCC == "") {
throw new Exception("Recipients was not provided");
}
ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2013);
string serviceUrl = "https://mail.mydomain.com/ews/exchange.asmx";
service.Url = new Uri(serviceUrl);
EmailMessage email = new EmailMessage(service);
email.Subject = Subject;
if (isHTML) {
email.Body = new MessageBody(BodyType.HTML, Message);
} else {
email.Body = new MessageBody(BodyType.Text, Message);
}
if (isHighImportance) {
email.Importance = new ImportantChoiceType(HIGH);
} else {
email.Importance = new ImportantChoiceType(NORMAL);
}
char[] splitComma = new char[]{','};
char[] splitAsterisk = new char[]{'*'};
char[] splitSemicolon = new char[]{';'};
char[] splitAny = new char[]{',',';'};
//To
foreach (String r in To.Split(splitAny, StringSplitOptions.RemoveEmptyEntries))
{
email.ToRecipients.Add(r.Trim());
}
//CC
foreach (String r in CC.Split(splitAny, StringSplitOptions.RemoveEmptyEntries))
{
email.CcRecipients.Add(r.Trim());
}
//BCC
foreach (String r in BCC.Split(splitAny, StringSplitOptions.RemoveEmptyEntries))
{
email.BccRecipients.Add(r.Trim());
}
//SaveDraft
email.Save(SearchFolderByName(service,"Drafts",mailbox));
// Add attachments
foreach (String att in Attachments.Split(splitSemicolon, StringSplitOptions.RemoveEmptyEntries))
{
if (att.Contains(new string(splitAsterisk))) {
String[] attArray = att.Split(splitAsterisk, StringSplitOptions.RemoveEmptyEntries);
FileAttachment fileatt = email.Attachments.AddFileAttachment(attArray[0]);
fileatt.IsInline = true;
fileatt.ContentId = attArray[1];
} else {
email.Attachments.AddFileAttachment(att);
}
}
//Send
if (SaveSent)
{
email.SendAndSaveCopy(SearchFolderByName(service,"SentItems",mailbox));
} else {
email.Send();
}
}
catch (Exception e)
{
Success = false;
ErrorMessage = e.ToString();
}

Importance property in EmailMessage class is Enum so you have to use importance enum.
email.Importance = Importance.High // Or Importance.Low or Importance.Normal

Send Generated Pdf as Email Attachment Asp.NetCore

I am using Rotativa to convert my view to pdf. I would like to send that generated pdf as an email attachment (without having to download it first to disk). I've been following a bunch of tutorials to do this but I just keep going round in circles. I would much appreciate any help I can get.
public async Task<IActionResult>SomeReport()
{
...
return new ViewAsPdf (report)
}
return view();
MemoryStream memoryStream = new MemoryStream();
MimeMessage msg = new MimeMessage();
MailboxAddress from = new MailboxAddress ("Name", "emailAddress")
msg.From.Add(from);
MailboxAddress to = new MailboxAddress ("Name", "emailAddress")
msg.From.Add(to);
BodyBuilder bd = new BodyBuilder();
bb.HtmlBody ="some text";
bb.Attachments.Add("attachmentName", new MemoryStream());
msg.Body = bb.ToMessageBody();
SmtpClient smtp = new SmtpClient();
smtp.Connect("smtp.gmail.com",465, true);
smtp.Authenticate("emailAddress", "Pwd");
smtp.Send(msg);
smtp.Disconnect(true);
smtp.Dispose();
Edit
Parent View from which Email is sent
#Model MyProject.Models.EntityViewModel
<a asp-action= "SendPdfMail" asp-controller ="Student" asp-route-id = "#Model.Student.StudentId">Email</a>
...
SendPdfMail action in Student Controller
public async Task<IActionResult> SendPdfMail(string id)
{
var student = await context.Student. Where(s => s.StudentId == id);
if (student != null)
{
...
var viewAsPdf = new ViewAsPdf("MyPdfView", new{route = id})
{
Model = new EntityViewModel(),
FileName = PdfFileName,
...
}
}
};

Complete answer using Rotativa.AspNetCore. Code is developed in VS 2019, Core 3.1, Rotativa.AspNetCore 1.1.1.
Nuget
Install-package Rotativa.AspNetCore
Sample controller
public class SendPdfController : ControllerBase
{
private const string PdfFileName = "test.pdf";
private readonly SmtpClient _smtpClient;
public SendPdfController(SmtpClient smtpClient)
{
_smtpClient = smtpClient;
}
[HttpGet("SendPdfMail")] // https://localhost:5001/SendPdfMail
public async Task<IActionResult> SendPdfMail()
{
using var mailMessage = new MailMessage();
mailMessage.To.Add(new MailAddress("a#b.c"));
mailMessage.From = new MailAddress("c#d.e");
mailMessage.Subject = "mail subject here";
var viewAsPdf = new ViewAsPdf("view name", <YOUR MODEL HERE>)
{
FileName = PdfFileName,
PageSize = Size.A4,
PageMargins = { Left = 1, Right = 1 }
};
var pdfBytes = await viewAsPdf.BuildFile(ControllerContext);
using var attachment = new Attachment(new MemoryStream(pdfBytes), PdfFileName);
mailMessage.Attachments.Add(attachment);
_smtpClient.Send(mailMessage); // _smtpClient will be disposed by container
return new OkResult();
}
}
Options class
public class SmtpOptions
{
public string Host { get; set; }
public int Port { get; set; }
public string Username { get; set; }
public string Password { get; set; }
}
In Startup#ConfigureServices
services.Configure<SmtpOptions>(Configuration.GetSection("Smtp"));
// SmtpClient is not thread-safe, hence transient
services.AddTransient(provider =>
{
var smtpOptions = provider.GetService<IOptions<SmtpOptions>>().Value;
return new SmtpClient(smtpOptions.Host, smtpOptions.Port)
{
// Credentials and EnableSsl here when required
};
});
appsettings.json
{
"Smtp": {
"Host": "SMTP HOST HERE",
"Port": PORT NUMBER HERE,
"Username": "USERNAME HERE",
"Password": "PASSWORD HERE"
}
}

There's not quite enough to go on, but you need something like this:
MimeMessage msg = new MimeMessage();
MailboxAddress from = new MailboxAddress ("Name", "emailAddress");
msg.From.Add(from);
MailboxAddress to = new MailboxAddress ("Name", "emailAddress");
msg.To.Add(to);
BodyBuilder bb = new BodyBuilder();
bb.HtmlBody ="some text";
using (var wc = new WebClient())
{
bb.Attachments.Add("attachmentName",wc.DownloadData("Url for your view goes here"));
}
msg.Body = bb.ToMessageBody();
using (var smtp = new SmtpClient())
{
smtp.Connect("smtp.gmail.com",465, true);
smtp.Authenticate("emailAddress", "Pwd");
smtp.Send(msg);
smtp.Disconnect(true);
}
Notice this adds the attachment before calling .ToMessageBody(), as well as fixing at least four basic typos.
But I doubt this will be enough... I suspect ViewAsPdf() needs more context than you get from a single DownloadData() request, and you'll need to go back to the drawing board to be able to provide that context, but this at least will help push you in the right direction.

MailItem attachment unknown

I have a mail containing only a signature as an image and an attachment like the screenshot below.
I save this email as C:\mail.msg, I try then to read it by the code below:
var oApp = new Microsoft.Office.Interop.Outlook.Application();
MailItem outlookMsg = (Microsoft.Office.Interop.Outlook.MailItem)oApp.CreateItemFromTemplate(#"C:\mail.msg");
//there are 2 attachments inside
foreach(var att in outlookMsg.Attachments)
{
att.SaveAsFile($#"C:\{att.FileName}");
}
The problem
There are 2 attachments inside the MailItem named :
-empty.xlsx
-lot4.xlsx
If I change the extension of lot4.xlsx to lot4.png, it can be opened as the image in the signature.
Someone has seen this strange situation when an attachment is added with name incorrect?

You could download attachments using the below code:
private void ThisApplication_NewMail()
{
Outlook.MAPIFolder inBox = this.Application.ActiveExplorer()
.Session.GetDefaultFolder(Outlook
.OlDefaultFolders.olFolderInbox);
Outlook.Items inBoxItems = inBox.Items;
Outlook.MailItem newEmail = null;
inBoxItems = inBoxItems.Restrict("[Unread] = true");
try
{
foreach (object collectionItem in inBoxItems)
{
newEmail = collectionItem as Outlook.MailItem;
if (newEmail != null)
{
if (newEmail.Attachments.Count > 0)
{
for (int i = 1; i <= newEmail
.Attachments.Count; i++)
{
newEmail.Attachments[i].SaveAsFile
(#"C:\TestFileSave\" +
newEmail.Attachments[i].FileName);
}
}
}
}
}
catch (Exception ex)
{
string errorInfo = (string)ex.Message
.Substring(0, 11);
if (errorInfo == "Cannot save")
{
MessageBox.Show(#"Create Folder C:\TestFileSave");
}
}
}
For more information, please refer to this link:
How to: Programmatically save attachments from Outlook email items

With Microsoft EWS, its very easy to do:
reference: http://johnlabtest.blogspot.com/2014/01/save-attachments-from-exchange-mail-box.html
static void Main(string[] args)
{
ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2007_SP1);
service.Credentials = new WebCredentials("user1#contoso.com", "password");
service.TraceEnabled = true;
service.TraceFlags = TraceFlags.All;
service.AutodiscoverUrl("user1#contoso.com", RedirectionUrlValidationCallback);
var messages = new List<EmailMessage>();
// only get unread emails
SearchFilter folderSearchFilter = new SearchFilter.IsEqualTo(EmailMessageSchema.IsRead, false);
// we just need the id in our results
var itemView = new ItemView(10) {PropertySet = new PropertySet(BasePropertySet.IdOnly)};
FindItemsResults<Item> findResults = service.FindItems(folder.Id, folderSearchFilter, itemView);
foreach (Item item in findResults.Items.Where(i => i is EmailMessage))
{
EmailMessage message = EmailMessage.Bind(service, item.Id, new PropertySet(BasePropertySet.IdOnly, ItemSchema.Attachments, ItemSchema.HasAttachments));
messages.Add(message);
}
// loop through messages and call processemail here.
}
public static void ProcessEmail(EmailMessage message)
{
string saveDir = ConfigurationManager.AppSettings["AttachmentSaveDirectory"];
if (message.HasAttachments)
{
foreach (Attachment attachment in message.Attachments.Where(a=> a is FileAttachment))
{
FileAttachment fileAttachment = attachment as FileAttachment;
fileAttachment.Load(); // populate the content property of the attachment
using (FileStream fs = new FileStream(saveDir + attachment.Name, FileMode.Create))
{
using (BinaryWriter w = new BinaryWriter(fs))
{
w.Write(fileAttachment.Content);
}
}
}
}
message.IsRead = true;
message.Update(ConflictResolutionMode.AutoResolve); // push changes back to server
}
private static bool RedirectionUrlValidationCallback(string redirectionUrl)
{
// The default for the validation callback is to reject the URL.
bool result = false;
Uri redirectionUri = new Uri(redirectionUrl);
// Validate the contents of the redirection URL. In this simple validation
// callback, the redirection URL is considered valid if it is using HTTPS
// to encrypt the authentication credentials.
if (redirectionUri.Scheme == "https")
{
result = true;
}
return result;
}