public static bool IsVolumeEmpty(string deviceID, out Exception ex)
{
bool isEmpty = false;
ManagementObject win32Volume = BitlockerUtil.GetWin32Volume(deviceID, out ex);
if (win32Volume != null)
{
win32Volume.GetPropertyValue("Name").ToString();
ex = Util.HandleExceptions(delegate
{
long num = Convert.ToInt64(win32Volume.GetPropertyValue("Capacity").ToString()) - Convert.ToInt64(win32Volume.GetPropertyValue("FreeSpace").ToString());
if (num <= 524288000L)
{
isEmpty = true;
}
});
}
return(isEmpty);
}