如何在Windows 10 Mail App中打开带有附件的新电子邮件 [英] How to open new email with attachment in Windows 10 Mail App

问题描述

我正在尝试添加一个功能到我的C＃/ .Net应用程序为用户发送电子邮件文件。
当用户安装Outlook时，我可以成功地使用Outlook interop API来完成我想要的操作。
然而，在新的Windows 10安装中，我无法解决如何在Windows Store中的默认Mail应用程序中打开包含附件的电子邮件。

I am trying to add a feature to my C# / .Net app for a user to email a file. When a user has Outlook installed, I can successfully use the Outlook interop APIs to do exactly what I want. However on a new Windows 10 install, I cannot work out how to open an email with an attachment in the default Mail app, which is from the Windows Store.

我试过：

1. 使用EML文件，根据 https://stackoverflow.com/a/25586282/2102158

• 邮件应用程式没有注册自己打开EML文件

使用MAPI32.dll等（我使用 https://github.com/metageek-llc/inSSIDer- 2 / blob / master / MetaScanner / UnhandledException / MapiMailMessage.cs ）

Using the MAPI32.dll etc. (I used the code from https://github.com/metageek-llc/inSSIDer-2/blob/master/MetaScanner/UnhandledException/MapiMailMessage.cs)

• 弹出一个对话框，说没有电子邮件程序注册。似乎邮件应用程序不与MAPI交互

使用mailto：links。

Using mailto: links.

• 邮件程序打开，但不遵守附件=或附加=参数

另外

• Windows .ApplicationModel.Email.EmailMessage似乎只能在手机上使用。

• Windows.ApplicationModel.Email.EmailMessage seems to be only availble on phones.

我不想使用SMTP发送消息服务器端。

I do not want to use SMTP to send the message server side.

我还尝试了与邮件应用程序相关联的MS-UNISTORE_EMAIL：和OUTLOOKMAIL：url方案，它们似乎与mailto的行为相同：

I also tried the MS-UNISTORE_EMAIL: and OUTLOOKMAIL: url schemes, which are associated to the Mail app, they seemed to behave the same as mailto:

似乎没有办法从命令行启动Mail应用程序

There does not seem to be any way to start the Mail app from the command line

推荐答案

请尝试以下示例

 private async void SendEmailButton_Click(object sender, RoutedEventArgs e)
        {
            EmailMessage emailMessage = new EmailMessage();
            emailMessage.To.Add(new EmailRecipient("***@***.com"));
            string messageBody = "Hello World";
            emailMessage.Body = messageBody;
            StorageFolder MyFolder = Windows.ApplicationModel.Package.Current.InstalledLocation;
            StorageFile attachmentFile =await MyFolder.GetFileAsync("MyTestFile.txt");
            if (attachmentFile != null)
            {
                var stream = Windows.Storage.Streams.RandomAccessStreamReference.CreateFromFile(attachmentFile);
                var attachment = new Windows.ApplicationModel.Email.EmailAttachment(
                         attachmentFile.Name,
                         stream);
                emailMessage.Attachments.Add(attachment);
            }
            await EmailManager.ShowComposeNewEmailAsync(emailMessage);           
        }

ShowComposeNewEmailAsny（...） part是魔术的一部分。

The ShowComposeNewEmailAsny(...) part is the magic part.

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