private static extern IntPtr CreateFile(
[In] String lpFileName,
WinAPI.FILE_ACCESS_FLAGS dwDesiredAccess,
WinAPI.FILE_SHARE dwShareMode,
IntPtr lpSecurityAttributes,
WinAPI.CreateDisposition dwCreationDisposition,
UInt32 dwFlagsAndAttributes,
IntPtr hTemplateFile);
/// <summary>Create instance of device info class by device ID or drive letter</summary>
/// <param name="deviceId">ID of device</param>
/// <param name="deviceName">name of device</param>
/// <param name="accessFlags">Device desired access flags</param>
/// <param name="shareMode">Opened device share mode</param>
/// <exception cref="ArgumentException">Device id does not specified</exception>
public DeviceIoControl(Byte?deviceId, String deviceName, WinAPI.FILE_ACCESS_FLAGS accessFlags, WinAPI.FILE_SHARE shareMode)
{ //DriveInfo.GetDrives()
this._deviceId = deviceId;
if (deviceId.HasValue)
{
this._deviceName = DeviceIoControl.GetDeviceName(deviceId.Value);
}
else if (!String.IsNullOrEmpty(deviceName))
{
Char deviceLetter = Array.Find(deviceName.ToCharArray(), delegate(Char ch) { return(Char.IsLetter(ch)); });
this._deviceName = String.Format(Constant.DriveWinNTArg1, deviceLetter);
}
else
{
throw new ArgumentException("Device id does not specified");
}
this._deviceHandle = Methods.OpenDevice(this.Name, accessFlags, shareMode);
}
/// <summary>Opens specified device</summary>
/// <param name="lpFileName">Device path</param>
/// <param name="dwDesiredAccess">Desired access flage</param>
/// <param name="dwShareMode">Share mode</param>
/// <exception cref="ArgumentNullException">lpFileName is null or empty</exception>
/// <exception cref="Win32Exception">Device does not opened</exception>
/// <returns>Handle to the opened device</returns>
public static IntPtr OpenDevice(String lpFileName, WinAPI.FILE_ACCESS_FLAGS dwDesiredAccess, WinAPI.FILE_SHARE dwShareMode)
{
if (String.IsNullOrEmpty(lpFileName))
{
throw new ArgumentNullException("lpFileName");
}
IntPtr result = Methods.CreateFile(lpFileName,
dwDesiredAccess,
dwShareMode,
IntPtr.Zero,
WinAPI.CreateDisposition.OPEN_EXISTING,
0,
IntPtr.Zero);
if (result == Constant.INVALID_HANDLE_VALUE)
{
throw new Win32Exception();
}
return(result);
}
