问题
I've got an application in which the user clicks a button, and should be presented a PDF that is stored in the application.
They can view the PDF internally in the app, or launch the native windows PDF viewer, either way is fine.
How can I provide a link / event handler for the button click to launch a view of a PDF file?
回答1:
Use the LaunchFileAsync function of the Launcher class,
description: Starts the default app associated with the specified file, using the specified options.
example code:
Windows.System.Launcher.launchFileAsync(file, options).done( /* Your success and error handlers */ );
来源：https://stackoverflow.com/questions/12171444/open-a-pdf-file-from-a-winjs-application