File access sample
Shows how to create, read, write, copy and delete a file, how to retrieve file properties, and how to track a file or folder so that your app can access it again. This sample uses the Windows.Storage and Windows.Storage.AccessCache APIs.
Note: This sample is part of a large collection of UWP feature samples. If you are unfamiliar with Git and GitHub, you can download the entire collection as a ZIP file, but be sure to unzip everything to access shared dependencies. For more info on working with the ZIP file, the samples collection, and GitHub, see Get the UWP samples from GitHub. For more samples, see the Samples portal on the Windows Dev Center.
The sample demonstrates these tasks:
Create a file in the Pictures library
Get a file's parent folder
Uses the StorageFile.GetParentAsync method to get the parent folder of the file that was created in the Picture folder. The app has the Pictures library capability, so it can access the folder where the file was created.
Write and read text in a file
Write and read bytes in a file
Write and read a file using a stream
Uses the following API to write and read the file using a stream.
For more info, see Create, write, and read a file.
Display file properties
Track a file or folder so that you can access it later (persisting access)
For more info, see Track recently used files and folders.
Copy a file
Compare two files to see if they're the same
Delete a file
Try to get a file without getting an error
Note The Windows universal samples require Visual Studio 2017 to build and Windows 10 to execute.
To obtain information about Windows 10 development, go to the Windows Dev Center
To obtain information about Microsoft Visual Studio and the tools for developing Windows apps, go to Visual Studio
Note* If you want to learn about accessing files using a file picker, see Open files and folders with a picker.
Client: Windows 10 build 10500 or higher
Server: Windows Server 2016 Technical Preview build 10500 or higher
Phone: Windows 10 build 10500 or higher
Build the sample
- If you download the samples ZIP, be sure to unzip the entire archive, not just the folder with the sample you want to build.
- Start Microsoft Visual Studio 2017 and select File > Open > Project/Solution.
- Press Ctrl+Shift+B, or select Build > Build Solution.
Run the sample
The next steps depend on whether you just want to deploy the sample or you want to both deploy and run it.
Deploying the sample
- Select Build > Deploy Solution.
Deploying and running the sample
- To debug the sample and then run it, press F5 or select Debug > Start Debugging. To run the sample without debugging, press Ctrl+F5 or select Debug > Start Without Debugging.