I need to get free network drive space, without a "card"
DriveInfo drvInfo = new DriveInfo("\\NetworkDrive");
I am trying to do this, but it is not working.
I believe that you will need to call GetDiskFreeSpace (Win32 API) through P / Invoke to get free disk space on a UNC network drive.
GetDiskFreeSpace
eg.
C # GetDiskFreeSpace UNC
You can use WMI to connect to a remote computer and display the free space for each drive.
An example can be found here.