public virtual MAPI SendMail(MailMessage mailMessage)
{
const int mapiLogonUi = 0x00000001;
const int mapiDialog = 0x00000008;
const int how = mapiLogonUi | mapiDialog;
_message = new MapiMessage { subject = mailMessage.Subject(), noteText = mailMessage.Body() };
_message.recips = GetRecipients(mailMessage, out _message.recipCount);
_message.files = GetAttachments(mailMessage, out _message.fileCount);
var errorId = MAPISendMail(new IntPtr(0), new IntPtr(0), ref _message, how, 0);
if (errorId > 1)
throw new MAPIException(errorId);
return this;
}
private void btnSend_Click(object sender, EventArgs e)
{
try
{
var mm =
new MailMessage().AddToAddress(txtTo.Text)
.AddCCAddress(txtCC.Text)
.Subject(txtSubject.Text)
.Body(txtBody.Text);
foreach (ListViewItem item in lvwAttachments.Items)
{
mm.AddAttachment(item.Tag.ToString());
}
mm.Send();
}
catch (MAPIException ex)
{
MessageBox.Show(ex.Message);
}
}
static IntPtr GetAttachments(MailMessage mailMessage, out int fileCount)
{
fileCount = 0;
if (mailMessage.AttachmentFilePaths == null || mailMessage.AttachmentFilePaths.Count == 0)
return IntPtr.Zero;
var size = Marshal.SizeOf(typeof(MapiFileDesc));
var intPtr = Marshal.AllocHGlobal(mailMessage.AttachmentFilePaths.Count * size);
var mapiFileDesc = new MapiFileDesc { position = -1 };
var ptr = (int)intPtr;
foreach (string strAttachment in mailMessage.AttachmentFilePaths)
{
mapiFileDesc.name = Path.GetFileName(strAttachment);
mapiFileDesc.path = strAttachment;
Marshal.StructureToPtr(mapiFileDesc, (IntPtr)ptr, false);
ptr += size;
}
fileCount = mailMessage.AttachmentFilePaths.Count;
return intPtr;
}
public void Before()
{
_mapiStub = new MAPIStub();
_mailMessage = new MailMessage(_mapiStub);
}
static IntPtr GetRecipients(MailMessage mailMessage, out int recipCount)
{
recipCount = 0;
var recipients = new List<MapiRecipDesc>();
recipients.AddRange(mailMessage.ToAddresses.Select(toAddress => new MapiRecipDesc { recipClass = (int)AddressType.To, name = toAddress }));
recipients.AddRange(mailMessage.CCAddresses.Select(ccAddress => new MapiRecipDesc { recipClass = (int)AddressType.CC, name = ccAddress }));
recipients.AddRange(mailMessage.BCCAddresses.Select(bccAddress => new MapiRecipDesc { recipClass = (int)AddressType.BCC, name = bccAddress }));
if (recipients.Count == 0)
return IntPtr.Zero;
var size = Marshal.SizeOf(typeof(MapiRecipDesc));
var intPtr = Marshal.AllocHGlobal(recipients.Count * size);
var ptr = (int)intPtr;
foreach (var mapiDesc in recipients)
{
Marshal.StructureToPtr(mapiDesc, (IntPtr)ptr, false);
ptr += size;
}
recipCount = recipients.Count;
return intPtr;
}