有人可以举例说明如何使用C#中的 shell 函数SHOpenFolderAndSelectItems吗？我不太了解如何使用这些功能，也无法在pinvoke.net上找到它... =/
假设我有三个文件称为
X:\Pictures\a.jpgX:\Pictures\s.jpgX:\Pictures\d.jpg
然后我想用,打开X:\Pictures文件夹并选中。a.jpgs.jpgd.jpg
问问题
5255 次
4 回答
15
正如您似乎已经问过两次相同的问题（另一个是C#: How to open Windows Explorer windows with a number of files selected but no answer）我发布了我对这两个问题的解决方案，我不知道我是否应该做一个一个社区维基。
在同事遇到问题后寻找答案，但我没有找到，所以我写了一个小班来做这件事。代码在 Gist 上，我将在本文末尾粘贴当前版本。
使用您的示例文件，语法将是：
ShowSelectedInExplorer.FilesOrFolders(
@"X:\Pictures\a.jpg",
@"X:\Pictures\s.jpg",
@"X:\Pictures\d.jpg"
);
与低级 API 相比，我的代码有一些限制，主要是：
- 在桌面上选择没有实现
- 父目录必须是目录或驱动器，因此不能在我的电脑文件夹中选择多个驱动器。
无论如何，这里是 ShowSelectedInExplorer 类的源代码：
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());
}
}
}
于 2010-08-26T19:08:33.150 回答
5
不是 100% 的答案，但这个片段显示了如何从 C# 中选择资源管理器中的单个项目。
private void SelectInFileExplorer(string fullPath)
{
if (string.IsNullOrEmpty(fullPath))
throw new ArgumentNullException("fullPath");
fullPath = Path.GetFullPath(fullPath);
IntPtr pidlList = NativeMethods.ILCreateFromPathW(fullPath);
if (pidlList != IntPtr.Zero)
try
{
// Open parent folder and select item
Marshal.ThrowExceptionForHR(NativeMethods.SHOpenFolderAndSelectItems(pidlList, 0, IntPtr.Zero, 0));
}
finally
{
NativeMethods.ILFree(pidlList);
}
}
static class NativeMethods
{
[DllImport("shell32.dll", ExactSpelling=true)]
public static extern void ILFree(IntPtr pidlList);
[DllImport("shell32.dll", CharSet=CharSet.Unicode, ExactSpelling=true)]
public static extern IntPtr ILCreateFromPathW(string pszPath);
[DllImport("shell32.dll", ExactSpelling=true)]
public static extern int SHOpenFolderAndSelectItems(IntPtr pidlList, uint cild, IntPtr children, uint dwFlags);
}
于 2012-09-04T11:27:00.220 回答
1
查看http://www.cnblogs.com/qiuyi21/archive/2009/06/24/1510592.html。该示例使用 IShellLink 在启动 SHOpenFolderAndSelectItems 之前从路径获取 pidls，我将改用 ILCreateFromPath。
于 2010-06-10T21:46:39.280 回答
-1
大多数需求将由以下SHOpoenFolderSelectedItems人员处理：
对于 C# 中的文件选择，您通常会使用：System.Windows.Forms.OpenFileDialog。
对于 C# 中的文件夹选择，您通常会使用：System.Windows.Forms.FolderBrowserDialog。
您将设置一个适当的过滤器，您可以最初设置一个选定的项目。
也许这已经足够接近您的需要了？
于 2010-06-10T20:00:45.727 回答