/// <summary> /// Enumerates all children of this item. If this item is not a folder/container, this method will return an empty enumeration. /// </summary> /// <param name="filter">A filter for the types of children to enumerate.</param> /// <param name="parentWindow">The parent window.</param> /// <returns>An enumerated list of children matching the filter.</returns> public IEnumerable <ShellItem> EnumerateChildren(FolderItemFilter filter /*= FolderItemFilter.Folders | FolderItemFilter.IncludeHidden | FolderItemFilter.NonFolders | FolderItemFilter.IncludeSuperHidden */, System.Windows.Forms.IWin32Window parentWindow = null) { IEnumIDList eo = null; try { eo = iShellFolder.EnumObjects(IWin2Ptr(parentWindow, false), (SHCONTF)filter); } catch (Exception e) { Debug.WriteLine($"Unable to enum children in folder: {e.Message}"); } foreach (var p in eo.Enumerate(20)) { ShellItem i = null; try { i = this[p]; } catch (Exception e) { Debug.WriteLine($"Unable to open folder child: {e.Message}"); } if (i != null) { yield return(i); } } Marshal.ReleaseComObject(eo); }