问题
I would like to download a file to the DownloadsFolder in a Windows Store App. And then I'd like to bring up a Windows Explorer open on the DownloadsFolder (actually on the folder I create in the DownloadsFolder)
But I can't figure out how to do it.
This stackoverflow question Launching a Desktop Application with a Metro-style app suggests using Launcher.LaunchUriAsync. But the documentation claims:
You cannot use this method to launch a URI in the local zone. For example, apps cannot use the file:/// protocol to access files on the local computer. Instead, you must use the Storage APIs to access files.
And indeed, I was trying to use the "file:" protocol to bring up the explorer window. When I did try this mechanism Launcher.LaunchIUriAsync fails.
If the browser can do this, why can't I? Is there a way for me to bring up windows explorer, or is that outside the real of possibility?
回答1:
I don't think you can launch the Windows Explorer from metro. One thing you can use, however, is the File Picker.
http://code.msdn.microsoft.com/windowsapps/File-picker-app-extension-0cb95155
回答2:
If you're willing to have some non-Windows Store components in your solution, there is a workaround for this. Although you can't launch a process directly, you can always run a HTTP listener inside a Windows service which listens for commands from your sandboxed Windows Store (Metro-style) app and launches Explorer (or any other process) for you. A trivial way to do this would be a Web API service inside a Windows service - just implement the GET action in your controller and have arguments for the executable to launch and optionally executable arguments as well.
This is kind of doing an end-run around the sandbox security, though, so you might want to have a tailored Web API instead which just launches a pre-packaged set of apps (like Explorer or one of your own apps).
Of course, for consumer apps this is not a good solution because you can't just install everything from the Windows Store. For LOB apps, though, it's not a bad compromise because you typically have more control over the environment. This is a good way to surface some metrics or other data into a live tile and have your desktop app launch when the tile is clicked. Whether or not this makes for a good user experience is a totally different conversation.
回答3:
BatRT allows you to run batch file commands from WinRT applications. It utilizes URI calls. This can be used to open up applications or perform file operations.
来源：https://stackoverflow.com/questions/13320326/launch-windows-explorer-from-metro-style-app