How to read and modify NTFS Alternate Data Streams using .NET [closed]

Question

How can I read and modify "NTFS Alternate Data Streams" using .NET?

It seems there is no native .NET support for it. Which Win32 API's would I use? Also, how would I use them, as I don't think this is documented?

Answer 1

Here is a version for C#

using System.Runtime.InteropServices;  class Program {     static void Main(string[] args)     {         var mainStream = NativeMethods.CreateFileW(             "testfile",             NativeConstants.GENERIC_WRITE,             NativeConstants.FILE_SHARE_WRITE,             IntPtr.Zero,             NativeConstants.OPEN_ALWAYS,             0,             IntPtr.Zero);          var stream = NativeMethods.CreateFileW(             "testfile:stream",             NativeConstants.GENERIC_WRITE,             NativeConstants.FILE_SHARE_WRITE,             IntPtr.Zero,             NativeConstants.OPEN_ALWAYS,             0,             IntPtr.Zero);     } }  public partial class NativeMethods {      /// Return Type: HANDLE->void*     ///lpFileName: LPCWSTR->WCHAR*     ///dwDesiredAccess: DWORD->unsigned int     ///dwShareMode: DWORD->unsigned int     ///lpSecurityAttributes: LPSECURITY_ATTRIBUTES->_SECURITY_ATTRIBUTES*     ///dwCreationDisposition: DWORD->unsigned int     ///dwFlagsAndAttributes: DWORD->unsigned int     ///hTemplateFile: HANDLE->void*     [DllImportAttribute("kernel32.dll", EntryPoint = "CreateFileW")]     public static extern System.IntPtr CreateFileW(         [InAttribute()] [MarshalAsAttribute(UnmanagedType.LPWStr)] string lpFileName,          uint dwDesiredAccess,          uint dwShareMode,          [InAttribute()] System.IntPtr lpSecurityAttributes,          uint dwCreationDisposition,          uint dwFlagsAndAttributes,          [InAttribute()] System.IntPtr hTemplateFile     );  }   public partial class NativeConstants {      /// GENERIC_WRITE -> (0x40000000L)     public const int GENERIC_WRITE = 1073741824;      /// FILE_SHARE_DELETE -> 0x00000004     public const int FILE_SHARE_DELETE = 4;      /// FILE_SHARE_WRITE -> 0x00000002     public const int FILE_SHARE_WRITE = 2;      /// FILE_SHARE_READ -> 0x00000001     public const int FILE_SHARE_READ = 1;      /// OPEN_ALWAYS -> 4     public const int OPEN_ALWAYS = 4; }