使用c＃打开带附件的默认邮件客户端窗口，

Question

I googling and have tried below ways to achieve this,

 1, mailto:
 2, Registrykeys  - @"HKEY_CLASSES_ROOT\mailto\shell\open\command", "", "none");
 3, proc.StartInfo.FileName = string.Format("\"{0}\"", Process.GetProcessesByName("OUTLOOK")[0].Modules[0].FileName);

But this always returns outlook window only. But I want to open default mail client window which is from our device like Google chrome, MAIL Live window,OUTLOOK

Attached Images for your reference.

Please share your answers,

Answer 1

A mail client may or may not provide an API to send a mail with attachment but there is no standard way to open the default (or any) mail client with attachment.

That being said you can open the default mail client with a mailto uri :

    Uri myUri = new Uri("mailto:someone@example.com?Subject=Hello%20again&body=TEST");
    System.Diagnostics.Process.Start(myUri.AbsoluteUri);

You may try with other methods like MAPI or sending the mail yourself (SMTP) : C# MailTo with Attachment?