Detecting if disk is flash drive

Question

I wanna write program that detects flash drives.
But there's a problem.
Code:

DriveInfo[] allDrives = DriveInfo.GetDrives();

foreach (DriveInfo drive in DriveInfo.GetDrives())
{
    if (drive.DriveType == DriveType.Removable)
    {
    }
}

It works well, but it detects cdrom too. How to prevent it?

Answer 1

I have no answer why your code is not working. But if you want to detect USB-devices, you could also try it with the WMI like this:

ManagementObjectCollection drives = new ManagementObjectSearcher(
    "SELECT Caption, DeviceID FROM Win32_DiskDrive WHERE InterfaceType='USB'"
).Get();

Add the System.Management assembly to your project to do it like this.