Comme vous semblez avoir posé deux fois la même question (l'autre étant C# : Comment ouvrir l'explorateur Windows avec un certain nombre de fichiers sélectionnés ? qui n'avait pas de réponse) je poste ma solution aux deux questions je ne sais pas si je dois en faire un wiki communautaire.
En cherchant une réponse après qu'un collègue ait eu le même problème, je n'en ai trouvé aucune et j'ai donc écrit une petite classe pour faire cela. Le code est sur Gist et je collerai la version actuelle à la fin de ce billet.
Avec vos fichiers d'exemple, la syntaxe sera la suivante : :
ShowSelectedInExplorer.FilesOrFolders(
@"X:\Pictures\a.jpg",
@"X:\Pictures\s.jpg",
@"X:\Pictures\d.jpg"
);
Mon code comporte certaines limitations par rapport à l'API de bas niveau, principalement :
- La sélection sur le bureau n'est pas implémentée
- Le répertoire parent doit être un répertoire ou un lecteur. Vous ne pouvez donc pas sélectionner plusieurs lecteurs dans le dossier Poste de travail, par exemple.
Quoi qu'il en soit, voici le code source de la classe ShowSelectedInExplorer :
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.InteropServices.ComTypes;
static class ShowSelectedInExplorer
{
[Flags]
internal enum SHCONT : ushort
{
SHCONTF_CHECKING_FOR_CHILDREN = 0x0010,
SHCONTF_FOLDERS = 0x0020,
SHCONTF_NONFOLDERS = 0x0040,
SHCONTF_INCLUDEHIDDEN = 0x0080,
SHCONTF_INIT_ON_FIRST_NEXT = 0x0100,
SHCONTF_NETPRINTERSRCH = 0x0200,
SHCONTF_SHAREABLE = 0x0400,
SHCONTF_STORAGE = 0x0800,
SHCONTF_NAVIGATION_ENUM = 0x1000,
SHCONTF_FASTITEMS = 0x2000,
SHCONTF_FLATLIST = 0x4000,
SHCONTF_ENABLE_ASYNC = 0x8000
}
[ComImport,
Guid("000214E6-0000-0000-C000-000000000046"),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown),
ComConversionLoss]
internal interface IShellFolder
{
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
void ParseDisplayName(IntPtr hwnd, [In, MarshalAs(UnmanagedType.Interface)] IBindCtx pbc, [In, MarshalAs(UnmanagedType.LPWStr)] string pszDisplayName, [Out] out uint pchEaten, [Out] out IntPtr ppidl, [In, Out] ref uint pdwAttributes);
[PreserveSig]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
int EnumObjects([In] IntPtr hwnd, [In] SHCONT grfFlags, [MarshalAs(UnmanagedType.Interface)] out IEnumIDList ppenumIDList);
[PreserveSig]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
int BindToObject([In] IntPtr pidl, [In, MarshalAs(UnmanagedType.Interface)] IBindCtx pbc, [In] ref Guid riid, [Out, MarshalAs(UnmanagedType.Interface)] out IShellFolder ppv);
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
void BindToStorage([In] ref IntPtr pidl, [In, MarshalAs(UnmanagedType.Interface)] IBindCtx pbc, [In] ref Guid riid, out IntPtr ppv);
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
void CompareIDs([In] IntPtr lParam, [In] ref IntPtr pidl1, [In] ref IntPtr pidl2);
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
void CreateViewObject([In] IntPtr hwndOwner, [In] ref Guid riid, out IntPtr ppv);
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
void GetAttributesOf([In] uint cidl, [In] IntPtr apidl, [In, Out] ref uint rgfInOut);
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
void GetUIObjectOf([In] IntPtr hwndOwner, [In] uint cidl, [In] IntPtr apidl, [In] ref Guid riid, [In, Out] ref uint rgfReserved, out IntPtr ppv);
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
void GetDisplayNameOf([In] ref IntPtr pidl, [In] uint uFlags, out IntPtr pName);
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
void SetNameOf([In] IntPtr hwnd, [In] ref IntPtr pidl, [In, MarshalAs(UnmanagedType.LPWStr)] string pszName, [In] uint uFlags, [Out] IntPtr ppidlOut);
}
[ComImport,
Guid("000214F2-0000-0000-C000-000000000046"),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IEnumIDList
{
[PreserveSig]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
int Next(uint celt, IntPtr rgelt, out uint pceltFetched);
[PreserveSig]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
int Skip([In] uint celt);
[PreserveSig]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
int Reset();
[PreserveSig]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
int Clone([MarshalAs(UnmanagedType.Interface)] out IEnumIDList ppenum);
}
class NativeMethods
{
static readonly int pointerSize = Marshal.SizeOf(typeof(IntPtr));
[DllImport("ole32.dll", EntryPoint = "CreateBindCtx")]
public static extern int CreateBindCtx_(int reserved, out IBindCtx ppbc);
public static IBindCtx CreateBindCtx()
{
IBindCtx result;
Marshal.ThrowExceptionForHR(CreateBindCtx_(0, out result));
return result;
}
[DllImport("shell32.dll", EntryPoint = "SHGetDesktopFolder", CharSet = CharSet.Unicode, SetLastError = true)]
static extern int SHGetDesktopFolder_([MarshalAs(UnmanagedType.Interface)] out IShellFolder ppshf);
public static IShellFolder SHGetDesktopFolder()
{
IShellFolder result;
Marshal.ThrowExceptionForHR(SHGetDesktopFolder_(out result));
return result;
}
[DllImport("shell32.dll", EntryPoint = "SHOpenFolderAndSelectItems")]
static extern int SHOpenFolderAndSelectItems_(
[In] IntPtr pidlFolder, uint cidl, [In, Optional, MarshalAs(UnmanagedType.LPArray)] IntPtr[] apidl, int dwFlags
);
public static void SHOpenFolderAndSelectItems(IntPtr pidlFolder, IntPtr[] apidl, int dwFlags)
{
var cidl = (apidl != null) ? (uint)apidl.Length : 0U;
var result = NativeMethods.SHOpenFolderAndSelectItems_(pidlFolder, cidl, apidl, dwFlags);
Marshal.ThrowExceptionForHR(result);
}
[DllImport("shell32.dll", CharSet = CharSet.Unicode)]
public static extern IntPtr ILCreateFromPath([In, MarshalAs(UnmanagedType.LPWStr)] string pszPath);
[DllImport("shell32.dll")]
public static extern void ILFree([In] IntPtr pidl);
}
static IntPtr GetShellFolderChildrenRelativePIDL(IShellFolder parentFolder, string displayName)
{
var bindCtx = NativeMethods.CreateBindCtx();
uint pchEaten;
uint pdwAttributes = 0;
IntPtr ppidl;
parentFolder.ParseDisplayName(IntPtr.Zero, null, displayName, out pchEaten, out ppidl, ref pdwAttributes);
return ppidl;
}
static IntPtr PathToAbsolutePIDL(string path)
{
var desktopFolder = NativeMethods.SHGetDesktopFolder();
return GetShellFolderChildrenRelativePIDL(desktopFolder, path);
}
static Guid IID_IShellFolder = typeof(IShellFolder).GUID;
static int pointerSize = Marshal.SizeOf(typeof(IntPtr));
static IShellFolder PIDLToShellFolder(IShellFolder parent, IntPtr pidl)
{
IShellFolder folder;
var result = parent.BindToObject(pidl, null, ref IID_IShellFolder, out folder);
Marshal.ThrowExceptionForHR((int)result);
return folder;
}
static IShellFolder PIDLToShellFolder(IntPtr pidl)
{
return PIDLToShellFolder(NativeMethods.SHGetDesktopFolder(), pidl);
}
static void SHOpenFolderAndSelectItems(IntPtr pidlFolder, IntPtr[] apidl, bool edit)
{
NativeMethods.SHOpenFolderAndSelectItems(pidlFolder, apidl, edit ? 1 : 0);
}
public static void FileOrFolder(string path, bool edit = false)
{
if (path == null) throw new ArgumentNullException("path");
var pidl = PathToAbsolutePIDL(path);
try
{
SHOpenFolderAndSelectItems(pidl, null, edit);
}
finally
{
NativeMethods.ILFree(pidl);
}
}
static IEnumerable<FileSystemInfo> PathToFileSystemInfo(IEnumerable<string> paths)
{
foreach (var path in paths)
{
string fixedPath = path;
if (fixedPath.EndsWith(Path.DirectorySeparatorChar.ToString()) || fixedPath.EndsWith(Path.AltDirectorySeparatorChar.ToString()))
{
fixedPath = fixedPath.Remove(fixedPath.Length - 1);
}
if (Directory.Exists(fixedPath)) yield return new DirectoryInfo(fixedPath);
else if (File.Exists(fixedPath)) yield return new FileInfo(fixedPath);
else
{
throw new FileNotFoundException("The specified file or folder doesn't exists : " + fixedPath, fixedPath);
}
}
}
public static void FilesOrFolders(string parentDirectory, ICollection<string> filenames)
{
if (filenames == null) throw new ArgumentNullException("filenames");
if (filenames.Count == 0) return;
var parentPidl = PathToAbsolutePIDL(parentDirectory);
try
{
var parent = PIDLToShellFolder(parentPidl);
List<IntPtr> filesPidl = new List<IntPtr>(filenames.Count);
foreach (var filename in filenames)
{
filesPidl.Add(GetShellFolderChildrenRelativePIDL(parent, filename));
}
try
{
SHOpenFolderAndSelectItems(parentPidl, filesPidl.ToArray(), false);
}
finally
{
foreach (var pidl in filesPidl)
{
NativeMethods.ILFree(pidl);
}
}
}
finally
{
NativeMethods.ILFree(parentPidl);
}
}
public static void FilesOrFolders(params string[] paths)
{
FilesOrFolders((IEnumerable<string>)paths);
}
public static void FilesOrFolders(IEnumerable<string> paths)
{
FilesOrFolders(PathToFileSystemInfo(paths));
}
public static void FilesOrFolders(IEnumerable<FileSystemInfo> paths)
{
if (paths == null) throw new ArgumentNullException("paths");
if (paths.Count() == 0) return;
var explorerWindows = paths.GroupBy(p => Path.GetDirectoryName(p.FullName));
foreach (var explorerWindowPaths in explorerWindows)
{
var parentDirectory = Path.GetDirectoryName(explorerWindowPaths.First().FullName);
FilesOrFolders(parentDirectory, explorerWindowPaths.Select(fsi => fsi.Name).ToList());
}
}
}