FileOpenPicker class on WP8?

Question

According to http://msdn.microsoft.com/en-us/library/windowsphone/develop/windows.storage.pickers.fileopenpicker.aspx this class is supposed to work on Windows Phone 8 but when I try to implement it using the provided samples I get a "System.NotSupportedException" exception.  Is the documentation wrong?

Answer 1

The samples on that page are for Windows 8. 
Not all methods and properties of the class are implemented in Windows Phone 8... You need to read the remarks section on each property or method to see if it is implemented.

  For example, PickMultipleFilesAsync has the following note in the remarks section:

--------------------------
Windows Phone 8

This API is not implemented and will throw an exception if called.
--------------------------

... but PickSingleFileAsync has no such remark.

For an example of using PickSingleFileAsync see: How to use the photo picker from a Direct3D app for Windows Phone 8

---

-Eric.

Answer 2

The FileOpenPicker in WP8 is simply a Windows Runtime wrapper over the same photo library functionality that's accessible from the managed PhotoChooserTask. We do not currently support choosing files other than photos or choosing files from other Store apps.

Answer 3

There is a Documents folder on my phone, how do I get my app to read files out of that folder?

As soon as the debugger hits  FileOpenPicker openPicker = new FileOpenPicker() it throws an exception.  This is suppose to work on WP8, right? 

Answer 4

Why is this API not supported? What's wrong on giving readonly access to user-picked files? 

Almost all usable file extensions are reserved for file type association, so accessing SD cards is almost impossible, except for custom and some obscure files.

Answer 5

Hello Eric, Can't we read the Music, Picture, Video file?

---

Pallam Madhukar Windows Phone Developer

Answer 6

Hello Sean McKenna, Can't we read the Music, Picture, Video file?

---

Pallam Madhukar Windows Phone Developer

Answer 7

Hello Sean McKenna, Can't we read the Music, Picture, Video file?

---

Pallam Madhukar Windows Phone Developer

I would be interested in this too. Is it possible to access audio/video files stored in global folders with Windows Phone Runtime C++ code?

Answer 8

Hello So, How can I give access to a downloaded file to my Windows Phone 8 App ???

Answer 9

Hello So, How can I give access to a downloaded file to my Windows Phone 8 App ???

Unfortunately, with the frustratingly limited Windows Phone platform, it looks like registering file associations with your app is the only way to go. I've just gone through this process only to hit another major roadblock; WP8 doesn't expose the ability to read from or create compressed folders (zipped files) which it can obviously do internally.

Answer 10

On this page, it says this method is supported by WinPhone8. What's wrong with that?

http://msdn.microsoft.com/zh-CN/library/windowsphone/develop/windows.storage.pickers.fileopenpicker.aspx

要求

最低受支持的客户端	Windows 8 [仅 Windows 应用商店应用]
最低受支持的服务器	Windows Server 2012 [仅 Windows 应用商店应用]
最低受支持的电话	Windows Phone 8
命名空间	Windows.Storage.Pickers Windows::Storage::Pickers [C++]
元数据	Windows.winmd

---

My questions on MSDN.