Hi Fosjdjdjf,
Welcome to the
Developing Universal Windows apps forum! Please utilize tagging when
posting to this forum, thanks!
You can not access the file in D:\\ using the path, a uwp app can only access the file in:
1. Application install directory. The folder where your app is installed on the user’s system.
2. Application data locations. The folders where your app can store data.
3. Removable devices.
4. Additional files and folders by declaring capabilities in the app manifest (music, picture ...)
Besides, by calling a file picker to let the user pick files and folders for the app to access, see
Open files and folders with a picker. More details, please see the File access permissions.
More information about the path in UWP, you can reference the blog:
https://blogs.msdn.microsoft.com/wsdevsol/2012/12/04/skip-the-path-stick-to-the-storagefile/
Best regards,
Breeze
MSDN Community Support
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