文档文件夹中的访问被拒绝 [英] Access Denied in Document Folders

问题描述

我试图通过WP8.1手机应用程序将文件从Picture Library文件夹复制到Document文件夹但是我得到了拒绝访问权限。

当我尝试将文件从图片库复制到相机胶卷文件夹时n文件被复制而没有任何错误/异常。



下面是在处理Document文件夹时给出异常的代码：



StorageFolder ^ picturesFolder = KnownFolders :: DocumentsLibrary;

create_task（file-> CopyAsync（picturesFolder，" sample - Copy.dat"，NameCollisionOption :: ReplaceExisting））。then（[this，file]（task< StorageFile ^>
任务）

{ < br style ="color：＃333333; font-family：'Helvetica Neue'，Arial，Helvetica，sans-serif; font-size：15px; line-height：22.5px">
try

{

StorageFile ^ sampleFileCopy = task.get（）;

rootPage-> NotifyUser（"'file'" + file-> Name +"'被复制，新文件被命名为'" + sampleFileCopy-> Name
+"'。"，NotifyType :: StatusMessage）;

}

catch（COMException ^ ex）

{

rootPage-> HandleFileNotFoundException（ex）;

}

}）;

}



实际上我需要将图片库中的文件夹复制到文件夹中。请帮助。



谢谢，

Deepak

Hi,

I am trying to copy file from Picture Library folder to Document folder via WP8.1 phone app, however I am getting the Access Denied Exception.
When I tried to copy the file from Picture Library to Camera Roll folder than the file gets copied without any Error/Exception.

Below is the code that is giving exception while coping to Document folder:

StorageFolder^ picturesFolder = KnownFolders::DocumentsLibrary;
create_task(file->CopyAsync(picturesFolder, "sample - Copy.dat", NameCollisionOption::ReplaceExisting)).then([this, file](task<StorageFile^> task)
{
try
{
StorageFile^ sampleFileCopy = task.get();
rootPage->NotifyUser("The file '" + file->Name + "' was copied and the new file was named '" + sampleFileCopy->Name + "'.", NotifyType::StatusMessage);
}
catch (COMException^ ex)
{
rootPage->HandleFileNotFoundException(ex);
}
});
}

Actually I need to copy the folder present in Picture Library to the Document Folder. Kindly assist.

Thanks,
Deepak

推荐答案

除了其他KnownFolders之外，Windows Phone上的应用程序无法自由访问文档库。有关详细信息，请查看此处的说明：

http://msdn.microsoft.com/en-us/library/windows.storage.knownfolders.documentslibrary.aspx

如果你确实需要在那里创建文件也许能够使用FileSavePicker，如下所述：

http://msdn.microsoft.com/library/windows/apps/windows.storage.pickers.filesavepicker.aspx

If you do need to create files there you might be able to use the FileSavePicker as described here: http://msdn.microsoft.com/library/windows/apps/windows.storage.pickers.filesavepicker.aspx

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