public DefaultSearchLocations() { _dictionary = new Dictionary <string, Pidl>(5); foreach (Environment.SpecialFolder folder in EnumerateLocations()) { Pidl pidl = null; try { pidl = new Pidl(folder); string displayName = pidl.DisplayName; if (!string.IsNullOrEmpty(displayName)) { _dictionary.Add(displayName.ToLowerInvariant(), pidl); continue; } pidl.Dispose(); } catch (Exception) { if (pidl != null) { pidl.Dispose(); } } } }
public void Dispose() { if (_pidl != null) { _pidl.Dispose(); _pidl = null; } }
public void BrowseToParent() { if (_browseHistory.Current != null) { Pidl parent = _browseHistory.Current.GetParent(); if (parent != null) { try { this.BrowseTo(parent); } finally { parent.Dispose(); } } } }
public ShellItem() { _rootItem = this; try { // create a PIDL for the Desktop shell item. _pidl = new Pidl(Environment.SpecialFolder.Desktop); var shInfo = new Native.SHFILEINFO(); Native.Shell32.SHGetFileInfo((IntPtr)_pidl, 0, out shInfo, (uint)Marshal.SizeOf(shInfo), SHGFI.SHGFI_PIDL | SHGFI.SHGFI_DISPLAYNAME | SHGFI.SHGFI_SYSICONINDEX); // get the root IShellFolder interface int hResult = Native.Shell32.SHGetDesktopFolder(ref _shellFolder); if (hResult != 0) { Marshal.ThrowExceptionForHR(hResult); } _displayName = shInfo.szDisplayName; _typeName = string.Empty; _iconIndex = shInfo.iIcon; _isFolder = true; _isVirtual = true; _hasSubFolders = true; } catch (Exception ex) { // if an exception happens during construction, we must release the PIDL now (remember, it's a pointer!) if (_pidl != null) { _pidl.Dispose(); } throw new Exception("Creation of the root namespace shell item failed.", ex); } #if DEBUG _instanceCount++; #endif }
public override void Reload() { Pidl selectedPidl = _folderTreeView.CurrentPidl.Clone(); _suspendBeforeBrowse = true; try { foreach (FolderTreeNode node in _folderTreeView.Nodes) { node.Reload(); } _folderTreeView.BrowseTo(selectedPidl); } catch (Exception ex) { this.HandleBrowseException(ex); } finally { _suspendBeforeBrowse = false; selectedPidl.Dispose(); } }
public ShellItem(Pidl pidl, ShellItem parentShellItem, bool relativePidl) { int hResult; _rootItem = parentShellItem._rootItem; try { IntPtr tempPidl; if (relativePidl) { _pidl = new Pidl(parentShellItem.Pidl, pidl); tempPidl = (IntPtr)pidl; // use the relative one from parameters } else { _pidl = pidl.Clone(); tempPidl = (IntPtr)_pidl; // use the absolute one that we constructed just now } const Native.SHGFI flags = Native.SHGFI.SHGFI_PIDL // indicates that we're specifying the item by PIDL | Native.SHGFI.SHGFI_DISPLAYNAME // indicates that we want the item's display name | Native.SHGFI.SHGFI_SYSICONINDEX // indicates that we want the item's icon's index in the system image list | Native.SHGFI.SHGFI_ATTRIBUTES // indicates that we want the item's attributes | Native.SHGFI.SHGFI_TYPENAME; // indicates that we want the item's type name Native.SHFILEINFO shInfo = new Native.SHFILEINFO(); Native.Shell32.SHGetFileInfo((IntPtr)_pidl, 0, out shInfo, (uint)Marshal.SizeOf(shInfo), flags); // read item attributes Native.SFGAO attributeFlags = (Native.SFGAO)shInfo.dwAttributes; // create the item's IShellFolder interface if ((attributeFlags & Native.SFGAO.SFGAO_FOLDER) != 0) { Guid iidIShellFolder = new Guid(IID.IID_IShellFolder); if (_pidl == _rootItem._pidl) { // if the requested PIDL is the root namespace (the desktop) we can't use the the BindToObject method, so get it directly hResult = Native.Shell32.SHGetDesktopFolder(ref _shellFolder); } else { if (relativePidl) { hResult = (int)parentShellItem._shellFolder.BindToObject(tempPidl, IntPtr.Zero, ref iidIShellFolder, out _shellFolder); } else { hResult = (int)_rootItem._shellFolder.BindToObject(tempPidl, IntPtr.Zero, ref iidIShellFolder, out _shellFolder); } } if (hResult != 0) { // some objects are marked as folders, but really aren't and thus cannot be bound to an IShellFolder // log these events for future study, but it's not exactly something to be concerned about in isolated cases. // Marshal.ThrowExceptionForHR(hResult); if ((attributeFlags & Native.SFGAO.SFGAO_HASSUBFOLDER) == 0) { attributeFlags = attributeFlags & ~Native.SFGAO.SFGAO_FOLDER; } } } _displayName = shInfo.szDisplayName; _typeName = shInfo.szTypeName; _iconIndex = shInfo.iIcon; _isFolder = (attributeFlags & Native.SFGAO.SFGAO_FOLDER) != 0; _isVirtual = (attributeFlags & Native.SFGAO.SFGAO_FILESYSTEM) == 0; _hasSubFolders = (attributeFlags & Native.SFGAO.SFGAO_HASSUBFOLDER) != 0; } catch (UnauthorizedAccessException ex) { // if an exception happens during construction, we must release the PIDL now (remember, it's a pointer!) var path = string.Empty; if (_pidl != null) { path = _pidl.Path; _pidl.Dispose(); } throw new PathAccessException(path, ex); } catch (Exception ex) { // if an exception happens during construction, we must release the PIDL now (remember, it's a pointer!) if (_pidl != null) { _pidl.Dispose(); } throw new Exception("Creation of the specified shell item failed.", ex); } #if DEBUG _instanceCount++; #endif }