private void CopyAttachments(IMessage msg, MailMessage outMsg)
{
MAPI33.IMAPITable attachmentsTable = null;
msg.GetAttachmentTable(0, out attachmentsTable);
using (attachmentsTable) {
MAPI33.MapiTypes.Value[,] rows;
attachmentsTable.SetColumns(new Tags[] {Tags.PR_ATTACH_FILENAME, Tags.PR_ATTACH_CONTENT_ID, Tags.PR_ATTACH_MIME_TAG, Tags.PR_ATTACH_ENCODING, Tags.PR_ATTACH_LONG_PATHNAME, Tags.PR_ATTACH_SIZE, Tags.PR_ATTACH_NUM},
IMAPITable.FLAGS.Default);
//Use OpenAttach to get an IAttachment
int attachIdx = 0;
for( ;attachmentsTable.QueryRows(1, 0, out rows) == Error.Success && rows.Length > 0; ) {
try {
attachIdx++;
String attachFilename, attachMimeTag, attachContentId;
uint attachNum;
IAttachment attachObj;
byte[] attachData;
attachNum = (uint)((MapiInt32)rows[0,6]).Value;
msg.OpenAttach(attachNum, IAttachment.IID, 0, out attachObj);
using (attachObj) {
if (rows[0,0] is MapiString) {
attachFilename = ((MapiString)rows[0,0]).Value;
} else {
attachFilename = String.Format("Attach{0}.dat", attachIdx);
}
if (rows[0, 1] is MapiString) {
attachContentId = ((MapiString)rows[0, 1]).Value;
} else {
attachContentId = null;
}
if (rows[0,2] is MapiString) {
attachMimeTag = ((MapiString)rows[0,2]).Value;
} else {
attachMimeTag = String.Format("application/x-octet-stream");
}
IStream attachDataStream;
IUnknown unk;
Error hr = attachObj.OpenProperty(Tags.PR_ATTACH_DATA_BIN, IStream.IID, 0, 0, out unk);
//OLE object attachments are PR_ATTACH_DATA_OBJ, so if BIN isn't found, try that
if (hr == Error.NotFound) {
hr = attachObj.OpenProperty(Tags.PR_ATTACH_DATA_OBJ, IStream.IID, 0, 0, out unk);
}
if (hr == Error.Success) {
attachDataStream = (IStream)unk;
unk.Dispose();
using (attachDataStream) {
int bytesRead = 0;
ArrayList streamContents = new ArrayList();
byte[] buffer = new byte[1024];
do {
attachDataStream.Read(buffer, (uint)buffer.Length, out bytesRead);
if (bytesRead == buffer.Length) {
streamContents.AddRange(buffer);
} else {
for (int idx = 0; idx < (int)bytesRead; idx++) {
streamContents.Add(buffer[idx]);
}
}
} while (bytesRead > 0);
attachData = (byte[])streamContents.ToArray(typeof(byte));
}
} else {
attachData = System.Text.Encoding.ASCII.GetBytes(String.Format("Error getting contents of attachment '{0}' due to error '{1}'", attachFilename, hr));
}
//Use a MemoryStream to stream the attachment data into the Attachment object
using (MemoryStream ms = new MemoryStream(attachData)) {
outMsg.AddAttachment(ms, attachFilename, attachMimeTag, attachContentId);
}
}
} catch (Exception e) {
System.Diagnostics.Debug.WriteLine(e.ToString());
}
}
}
}