private long WriteAttachDataObj(Attachment attachment)
{
OleAttachment oleAttachment = attachment as OleAttachment;
long result = 0L;
if (oleAttachment != null)
{
byte[] array = MimeConstants.IID_IStorage.ToByteArray();
using (Stream stream = this.tnefWriter.StartStreamProperty(InternalSchema.AttachDataObj))
{
this.tnefWriter.StreamPropertyData(array, 0, array.Length);
using (Stream contentStream = oleAttachment.GetContentStream(PropertyOpenMode.ReadOnly))
{
result = Util.StreamHandler.CopyStreamData(contentStream, stream);
}
}
}
return(result);
}
public virtual bool SaveChanges()
{
if (this.AttachmentCollection == null)
{
throw new InvalidOperationException("Target item not specified; callback cannot invoke attachment-specific methods");
}
bool result = false;
if (this.attachmentLinks != null)
{
using (IEnumerator <AttachmentLink> enumerator = this.attachmentLinks.GetEnumerator())
{
while (enumerator.MoveNext())
{
AttachmentLink attachmentLink = enumerator.Current;
using (CoreAttachment coreAttachment = this.AttachmentCollection.Open(attachmentLink.AttachmentId))
{
using (Attachment attachment = Microsoft.Exchange.Data.Storage.AttachmentCollection.CreateTypedAttachment(coreAttachment, null))
{
if (this.removeUnlinkedAttachments && !attachmentLink.IsInline(this.requireMarkInline) && attachment.IsInline)
{
attachment.Dispose();
this.AttachmentCollection.Remove(attachmentLink.AttachmentId);
}
else
{
if (attachmentLink.NeedsConversionToImage && attachment.AttachmentType == AttachmentType.Ole)
{
OleAttachment oleAttachment = attachment as OleAttachment;
if (oleAttachment == null)
{
continue;
}
using (Attachment attachment2 = oleAttachment.ConvertToImageAttachment(this.AttachmentCollection, ImageFormat.Jpeg))
{
result = true;
attachmentLink.MakeAttachmentChanges(attachment2, this.requireMarkInline);
attachment2.Save();
continue;
}
}
if (attachmentLink.MakeAttachmentChanges(attachment, this.requireMarkInline))
{
result = true;
attachment.Save();
}
}
}
}
}
return(result);
}
}
if (this.requireMarkInline)
{
List <AttachmentId> list = null;
foreach (AttachmentHandle handle in this.AttachmentCollection)
{
using (CoreAttachment coreAttachment2 = this.AttachmentCollection.Open(handle))
{
if (coreAttachment2.IsInline)
{
if (this.removeUnlinkedAttachments)
{
if (list == null)
{
list = new List <AttachmentId>();
}
list.Add(coreAttachment2.Id);
}
else
{
coreAttachment2.IsInline = false;
result = true;
coreAttachment2.Save();
}
}
}
}
if (list != null)
{
foreach (AttachmentId id in list)
{
this.AttachmentCollection.Remove(id);
}
}
}
return(result);
}
