private Attachment[] GetAttachmentsWithManagedApi(string[] attachmentIds, string authToken, string ewsUrl)
{
ExchangeService service = new ExchangeService();
service.Credentials = new OAuthCredentials(authToken);
service.Url = new Uri(ewsUrl);
ServiceResponseCollection <GetAttachmentResponse> responses = service.GetAttachments(
attachmentIds, null, new PropertySet(BasePropertySet.FirstClassProperties, ItemSchema.MimeContent));
List <Attachment> attachments = new List <Attachment>();
foreach (GetAttachmentResponse response in responses)
{
Attachment attachment = new Attachment();
attachment.AttachmentName = response.Attachment.Name;
if (response.Attachment is FileAttachment)
{
FileAttachment file = response.Attachment as FileAttachment;
attachment.AttachmentBytes = file.Content;
}
else if (response.Attachment is ItemAttachment)
{
// Skip item attachments for now
// TODO: Add code to extract the MIME content of the item
// and build a .EML file to save to OneDrive.
}
attachments.Add(attachment);
}
return(attachments.ToArray());
}
private AttachmentResponse GetAttachmentsFromExchangeServerUsingEWSManagedApi(AttachmentRequest request)
{
var attachmentsProcessedCount = 0;
var attachmentNames = new List <string>();
// Creo un oggetto di tipo ExchangeService
ExchangeService service = new ExchangeService();
//imposto il token di autenticazione ricevuto dall'add-in
service.Credentials = new OAuthCredentials(request.attachmentToken);
//imposto la url del server Exchange
service.Url = new Uri(request.ewsUrl);
// Richiede gli allegati al server
var getAttachmentsResponse = service.GetAttachments(
request.attachments.Select(a => a.id).ToArray(),
null,
new PropertySet(BasePropertySet.FirstClassProperties,
ItemSchema.MimeContent));
if (getAttachmentsResponse.OverallResult == ServiceResult.Success)
{
foreach (var attachmentResponse in getAttachmentsResponse)
{
attachmentNames.Add(attachmentResponse.Attachment.Name);
if (attachmentResponse.Attachment is FileAttachment)
{
//mette il contenuto dell'allegato in uno stream
FileAttachment fileAttachment = attachmentResponse.Attachment as FileAttachment;
Stream s = new MemoryStream(fileAttachment.Content);
// Qui è possibile processare il contenuto dell'allegato
}
if (attachmentResponse.Attachment is ItemAttachment)
{
//mette il contenuto dell'allegato in uno stream
ItemAttachment itemAttachment = attachmentResponse.Attachment as ItemAttachment;
Stream s = new MemoryStream(itemAttachment.Item.MimeContent.Content);
// Qui è possibile processare il contenuto dell'allegato
}
attachmentsProcessedCount++;
}
}
// La risposta contiene il nome ed il numero degli allegati che sono stati
// processati dal servizio
var response = new AttachmentResponse();
response.attachmentNames = attachmentNames.ToArray();
response.attachmentsProcessed = attachmentsProcessedCount;
return(response);
}
public IEnumerable <string> Get([FromBody] AttachmentRequest request)
{
ExchangeService service = new ExchangeService();
service.Credentials = new OAuthCredentials(request.AttachmentToken);
service.Url = new Uri(request.EWSURL);
List <string> attachmentIds = request.Attachments.Select(x => x.ID).ToList();
List <string> attachmentNames = new List <string>();
var response = service.GetAttachments(attachmentIds.ToArray(), null, new PropertySet(BasePropertySet.FirstClassProperties, ItemSchema.MimeContent));
if (response.OverallResult == ServiceResult.Success)
{
foreach (var attachmentResponse in response)
{
attachmentNames.Add(attachmentResponse.Attachment.Name);
if (attachmentResponse.Attachment is FileAttachment)
{
FileAttachment a = attachmentResponse.Attachment as FileAttachment;
using (Stream ms = new MemoryStream(a.Content))
using (FileStream fs = new FileStream($@"C:\Users\Af\Desktop\{attachmentResponse.Attachment.Name}", FileMode.Create, FileAccess.Write))
{
byte[] bytes = new byte[ms.Length];
ms.Read(bytes, 0, (int)ms.Length);
fs.Write(bytes, 0, bytes.Length);
}
}
if (attachmentResponse.Attachment is ItemAttachment)
{
ItemAttachment attachment = attachmentResponse.Attachment as ItemAttachment;
}
}
}
return(attachmentNames);
}