在 Windows Phone 8.1 Silverlight 应用程序上撰写带有附件的电子邮件 [英] Compose Email with attachment on Windows Phone 8.1 Silverlight application
问题描述
这是我的功能(基于此:https://msdn.microsoft.com/en-us/library/windows/apps/xaml/dn632427.aspx):
Here's my function (based on this: https://msdn.microsoft.com/en-us/library/windows/apps/xaml/dn632427.aspx):
private async void ComposeEmail(String subject, String messageBody, String attachmentFile)
{
var msg = new EmailMessage();
msg.Subject = subject;
msg.Body = messageBody;
msg.To.Add(new EmailRecipient("example@example.com"));
if (attachmentFile != null && attachmentFile != "")
{
bool exists = File.Exists(attachmentFile);
Debug.WriteLine("File: " + attachmentFile + (exists ? " exists" : " not exists"));
try
{
StorageFile fl = await StorageFile.GetFileFromPathAsync(attachmentFile);
IRandomAccessStream stream = await fl.OpenAsync(FileAccessMode.Read);
var rastream = RandomAccessStreamReference.CreateFromStream(stream);
var attachment = new EmailAttachment(attachmentFile, rastream);
msg.Attachments.Add(attachment);
}
catch (Exception e)
{
Debug.WriteLine("[C#] attachment exception: " + e.Message);
}
}
try
{
await EmailManager.ShowComposeNewEmailAsync(msg);
}
catch (Exception e)
{
Debug.WriteLine("[C#] email manager exception: " + e.Message);
}
}
这是一个输出:
文件:C:\Data\Users\DefApps\APPDATA\Local\Packages\92319996-2154-4e16-91ac-c74ccb656b65_60jzptcn15482\AC\Temp\screenshot.png 存在
File: C:\Data\Users\DefApps\APPDATA\Local\Packages\92319996-2154-4e16-91ac-c74ccb656b65_60jzptcn15482\AC\Temp\screenshot.png exists
[C#] 电子邮件管理器异常:此 oplock 所使用的句柄关联已关闭.oplock 现在坏了.(例外来自结果:0x80070323)
[C#] email manager exception: The handle with which this oplock was associated has been closed. The oplock is now broken. (Exception from HRESULT: 0x80070323)
首先文件存在,我尝试加载它并在图像中显示并且它有效.所以这不是权限问题.其次,如果我不添加附件(只是注释掉代码),则不会引发所呈现的异常,并且我会看到带有正确主题、正文等的邮件编辑器.
First of all file exist, I tried loading it and displaying in image and it works. So this is not an issue with permissions. Second of all if I won't add an attachment (simply commenting out the code) the presented exception won't be raised and I'd see mail composer with correct subject, body etc.
推荐答案
感谢 @Will 的提示.
Thanks @Will for hint.
这是一个工作代码:
private StorageFile storageFile;
private async void ComposeEmail(String subject, String messageBody, StorageFile fl)
{
var msg = new EmailMessage();
msg.Subject = subject;
msg.Body = messageBody;
msg.To.Add(new EmailRecipient("contact@123kidsfun.com"));
String attachmentFile = fl.Name;
if (fl != null && attachmentFile != "")
{
try
{
var rastream = RandomAccessStreamReference.CreateFromFile(fl);
var attachment = new EmailAttachment(attachmentFile, rastream);
msg.Attachments.Add(attachment);
}
catch (Exception e)
{
Debug.WriteLine("[C#] attachment exception: " + e.Message);
}
}
try
{
await EmailManager.ShowComposeNewEmailAsync(msg);
}
catch (Exception e)
{
Debug.WriteLine("[C#] email manager exception: " + e.Message);
}
}
public void SendEmail(String subject, String body, String attachmentPath)
{
Debug.WriteLine("[C#] sendEmail(" + subject + ", " + body + ", " + attachmentPath + ")");
Dispatcher.BeginInvoke(() =>
{
CreateEmail(subject, body, attachmentPath);
});
}
private async void CreateEmail(String subject, String body, String path)
{
storageFile = await StorageFile.GetFileFromPathAsync(path);
ComposeEmail(subject, body, storageFile);
}
这篇关于在 Windows Phone 8.1 Silverlight 应用程序上撰写带有附件的电子邮件的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!