public DiskGeometry GetDiskGeometry(SafeHandle hDevice)
{
DiskGeometry geometry = new DiskGeometry();
SafeAllocHandle <DISK_GEOMETRY> diskGeoPtr = null;
try {
diskGeoPtr = new SafeAllocHandle <DISK_GEOMETRY>();
bool success = DeviceIoControl(hDevice, IOCTL_DISK_GET_DRIVE_GEOMETRY, IntPtr.Zero, 0,
diskGeoPtr, diskGeoPtr.SizeOf, out uint bytesReturns, IntPtr.Zero);
if (!success || bytesReturns == 0)
{
m_Win32Error = Marshal.GetLastWin32Error();
return(null);
}
DISK_GEOMETRY diskGeo = diskGeoPtr.ToStructure();
geometry.MediaType = diskGeo.MediaType;
geometry.Cylinders = diskGeo.Cylinders;
geometry.TracksPerCylinder = diskGeo.TracksPerCylinder;
geometry.SectorsPerTrack = diskGeo.SectorsPerTrack;
geometry.BytesPerSector = diskGeo.BytesPerSector;
} finally {
if (diskGeoPtr != null)
{
diskGeoPtr.Close();
}
}
return(geometry);
}
private void AddGeometry(IDictionary <string, ResultOrError <DiskGeometry> > dictionary, string path, XmlElement node)
{
if (node == null)
{
return;
}
if (dictionary.ContainsKey(path))
{
return;
}
// Because this is a complex type, The XML will always return the default value.
ResultOrError <DiskGeometry> result = GetResultOrError <DiskGeometry>(node);
if (result != null)
{
dictionary.Add(path, result);
return;
}
string mediaType = node["MediaType"].Attributes["result"].Value;
string cylinders = node["Cylinders"].Attributes["result"].Value;
string tracks = node["TracksPerCylinder"].Attributes["result"].Value;
string sectors = node["SectorsPerTrack"].Attributes["result"].Value;
string bytes = node["BytesPerSector"].Attributes["result"].Value;
DiskGeometry diskGeo = new DiskGeometry()
{
MediaType = (MediaType)int.Parse(mediaType, CultureInfo.InvariantCulture),
Cylinders = int.Parse(cylinders, CultureInfo.InvariantCulture),
TracksPerCylinder = int.Parse(tracks, CultureInfo.InvariantCulture),
SectorsPerTrack = int.Parse(sectors, CultureInfo.InvariantCulture),
BytesPerSector = int.Parse(bytes, CultureInfo.InvariantCulture),
};
dictionary.Add(path, new ResultOrError <DiskGeometry>(diskGeo));
}
