/// <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 */, HWND parentWindow = default)
{
if (iShellFolder.EnumObjects(parentWindow, (SHCONTF)filter, out var eo).Failed)
{
Debug.WriteLine($"Unable to enum children in folder.");
}
foreach (var p in eo.Enumerate(20))
{
ShellItem i = null;
try { i = this[p]; } catch (Exception e) { Debug.WriteLine($"Unable to open folder child: {e.Message}"); }
if (i != null)
{
yield return(i);
}
}
Marshal.ReleaseComObject(eo);
}
/// <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);
}
/// <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($"Unable to enum children in folder: {e.Message}"); }
if (eo != null)
{
foreach (var p in new Collections.IEnumFromNext <IntPtr>((out IntPtr p) => eo.Next(1, out p, out var f).Succeeded&& f == 1, () => { try { eo.Reset(); } catch { } }))
{
ShellItem i = null;
try { i = this[new PIDL(p)]; } catch (Exception e) { Debug.WriteLine($"Unable to open folder child: {e.Message}"); }
if (i != null)
{
yield return(i);
}
}
Marshal.ReleaseComObject(eo);
}
}
/// <summary>Initializes a new instance of the <see cref="ShellDataTable"/> class with the items from a shell folder.</summary>
/// <param name="folder">The folder whose items are to be retrieved.</param>
/// <param name="filter">The filter to determine which child items of the folder are enumerated.</param>
public ShellDataTable(ShellFolder folder, FolderItemFilter filter = FolderItemFilter.Folders | FolderItemFilter.NonFolders) : base(folder.ParsingName)
{
itemFilter = filter;
BuildColumns(parent = folder);
}
