C # brings up the Outlook interface and sends the specified attachment

C # on the network to call the Outlook interface to send mail examples of numerous, but all is a simple interface, set the recipient address, message title, body content, etc., but for the delivery of the specified attachment is very little. Also have implementation, but is introduced to the Outlook object library, I do not want to just so a small function to introduce such a big dongdong, too disgusting! Just also want to add this small function to CrossFile2.0, so last night carefully studied the next Outlook call parameters, found or can be implemented in a simple way, now posted to share the following:
Microsoft.Win32.RegistryKey Rkey = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey (@ "Mailto\shell\open\command") //Here we look for the system's default mail client, other client programs I have not tried, do not know whether this method is feasible

if (Rkey!= null)
{//Find out where the Outlook application is located, or else you can look it up in other ways
String path = Rkey.getvalue (""). ToString () + "";
Path = path. Substring (0, path. IndexOf (""));
Path = path. Replace ("\", "");
Rkey.close ();
Try
{
System.Diagnostics.Process.Start (Path, "-C IPM. note/m Myfriend@hotmail.com&subject=hello "+ this._imagepath);//Call to execute Outlook, focus on the following parameters, the file address of the attachment space separated
}
Catch
{
}
}