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Question

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Answer 1

Hi,

Windows store app 除了对application storage文件夹(local和romaing)以及文档库、图片库等（如果已经在manifest里面申请了访问权限）拥有访问权限之外，对存储在其它地方的文件以及文件夹没有访问权限，除了使用FilePicker以及FloderPickerd方法，他们没有访问权限的限制。具体您可以参考：http://msdn.microsoft.com/en-us/library/windows/apps/hh967755.aspx

假如您用filepicker的方法已经获得了某个文件的访问权限(假设这个文件在C盘)，如果您使用StorageFolder.GetFolderFromPathAsync方法的话，是无法获得该文件的父文件夹的访问权限的，因为StorageFolder.GetFolderFromPathAsync方法对C盘是没有访问的权限的。您可以使用8.1里面的StorageFile.GetParentAsync方法来获得该文件的父文件夹。

具体参考：http://msdn.microsoft.com/en-us/library/windows/apps/windows.storage.storagefile.getparentasync.aspx

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Answer 2

Hi,

自带的图片应用是采用的FloderPicker方法，此方法是没有权限限制的。

应该是通过FloderPicker的方法选择一个文件夹然后打开了文件夹中所有的文件。

具体的过程是先通过FolderPicke去选择一个文件夹，然后用StorageFolder.GetFilesAsync()方法打开该文件夹中所有的文件。您可以具体参考以下链接：

http://msdn.microsoft.com/en-us/library/windows/apps/br227276.aspx

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Answer 3

Hi,

通常情况下开发windows store app一般是通过FloderPicker这种方式，这个是没有权限限制的。至于您说的windows8.1自带的图片应用，由于涉及一些系统封装的东西，我们也没有办法看到。建议您使用FloderPicker这种方法！

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Answer 4

Hi,

文件类型关联里面是没有文件夹关联的，无论您是通过文件关联类型来打开文件还是其他的方式，windows store app都是有权限限制的！对于其他的API如您所使用的StorageFolder.GetFolderFromPathAsync方法这个也是有权限限制的。

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Answer 5

我也想知道有没有办法实现这样的功能。至少应该允许用户来设置权限，而不是微软来决定权限。