Check if NTFS is file system of volume in UWP

Question

I am developing an application that manages files. For the GUI, I am using UWP. I have enabled the capabilities for the File System (in Package.appxmanifest). I want to check if the File System on each volume in PC is NTFS.

I tried:

to call DriveFormat from DriveInfo, but there is thrown exception: System.UnauthorizedAccessException: 'Access to the path 'C:' is denied.' Why? I have enabled the capabilities for the File System.

DriveInfo[] drives = DriveInfo.GetDrives();

foreach (DriveInfo d in drives)
{
      d.DriveFormat;
}

I have also run Visual Studio as administrator and the same exception is thrown.

I met a similar situation few months ago, when I needed the used space percentage on volume, and the same exception was thrown. To solve the problem with the used space in the drive, I have used StorageFolder.

const string PERCENT_FULL = "System.PercentFull";
StorageFolder storageFolder = await StorageFolder.GetFolderFromPathAsync(d.RootDirectory.FullName);
var properties = await storageFolder.Properties.RetrievePropertiesAsync(new string[] { PERCENT_FULL });

Can I check the file system type on the volume with StorageFolder? I have searched on https://learn.microsoft.com/en-us/windows/win32/properties/core-bumper to see if any property could solve my problem, but I did not find anything.

Is there any possibility to check the file system in UWP?

Any updates for this thread ?

Nico Zhu
– Nico Zhu

2021-06-23 09:04:26 +00:00
Commented Jun 23, 2021 at 9:04 — Nico Zhu
– Nico Zhu, Commented Jun 23, 2021 at 9:04

Nico Zhu · Accepted Answer · 2021-06-07 06:14:18Z

Check if NTFS is file system of volume in UWP

Currently, UWP does not contain such api could detect the disk's device format, for your requirement, the better way is use desktop extension to load DeviceFormat and write to local storage, and load above info from UWP platform.

For example

DriveInfo[] allDrives = DriveInfo.GetDrives();

        foreach (DriveInfo d in allDrives)
        {
            Console.WriteLine("Drive {0}", d.Name);
            Console.WriteLine("  Drive type: {0}", d.DriveType);
            if (d.IsReady == true)
            {
                Console.WriteLine("  Volume label: {0}", d.VolumeLabel);
                Console.WriteLine("  File system: {0}", d.DriveFormat);
                Console.WriteLine(
                    "  Available space to current user:{0, 15} bytes",
                    d.AvailableFreeSpace);

                Console.WriteLine(
                    "  Total available space:          {0, 15} bytes",
                    d.TotalFreeSpace);

                Console.WriteLine(
                    "  Total size of drive:            {0, 15} bytes ",
                    d.TotalSize);
            }
        }

And using desktop-bridge please refer stefan's blog UWP with Desktop Extension

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