public static List <ShellItem> GetItems(Guid FolderID) //Получает список элементов каталога по GUID
{
IntPtr p = IntPtr.Zero;
IShellFolder pFolder = null;
IEnumIDList pEnum = null;
IntPtr pItem = IntPtr.Zero;
IntPtr lpStr = IntPtr.Zero;
STRRET strret;
Guid guid = typeof(IShellFolder).GUID;
List <ShellItem> items = new List <ShellItem>();
ShellItem si;
try
{
int hr = NativeMethods.SHGetKnownFolderIDList(ref FolderID, 0, IntPtr.Zero, out p);
if (hr != 0)
{
throw Marshal.GetExceptionForHR(hr);
}
hr = NativeMethods.SHBindToObject(null, p, null, ref guid, out pFolder);
if (hr != 0)
{
throw Marshal.GetExceptionForHR(hr);
}
pFolder.EnumObjects(IntPtr.Zero, NativeMethods.SHCONTF_FOLDERS | NativeMethods.SHCONTF_NONFOLDERS, out pEnum);
while (true)
{
pItem = IntPtr.Zero;
uint res = pEnum.Next(1, out pItem, IntPtr.Zero);
if (res != 0)
{
break;
}
si = new ShellItem();
//display name
lpStr = IntPtr.Zero;
strret = new STRRET();
pFolder.GetDisplayNameOf(pItem, NativeMethods.SHGDN_NORMAL, out strret);
hr = NativeMethods.StrRetToStr(ref strret, pItem, out lpStr);
if (hr != 0)
{
throw Marshal.GetExceptionForHR(hr);
}
string s = Marshal.PtrToStringUni(lpStr);
si.DisplayName = s;
NativeMethods.CoTaskMemFree(lpStr);
//path
lpStr = IntPtr.Zero;
strret = new STRRET();
pFolder.GetDisplayNameOf(pItem, NativeMethods.SHGDN_FORPARSING, out strret);
hr = NativeMethods.StrRetToStr(ref strret, pItem, out lpStr);
if (hr != 0)
{
throw Marshal.GetExceptionForHR(hr);
}
s = Marshal.PtrToStringUni(lpStr);
try { si.Path = new Uri(s); }
catch (UriFormatException) { si.Path = new Uri("file://localhost/" + s); }
NativeMethods.CoTaskMemFree(lpStr);
//icon
try
{
Guid iid_IIExtractIcon = typeof(IExtractIcon).GUID;
IExtractIcon pExtract;
pFolder.GetUIObjectOf(IntPtr.Zero, 1, new IntPtr[] { pItem }, ref iid_IIExtractIcon, 0, out pExtract);
StringBuilder sbIcon = new StringBuilder(260);
int index = 0;
uint flags;
hr = pExtract.GetIconLocation(NativeMethods.GIL_FORSHELL, sbIcon, 260, out index, out flags);
if (hr == 0)
{
IntPtr hIconSmall = IntPtr.Zero, hIconLarge = IntPtr.Zero;
hr = pExtract.Extract(sbIcon.ToString(), (uint)index, out hIconLarge, out hIconSmall, 0x00140014);
if (hr == 0 && hIconSmall != IntPtr.Zero)
{
var icon = System.Drawing.Icon.FromHandle(hIconSmall);
var bitmap = icon.ToBitmap();
using (bitmap)
{
MemoryStream ms = new MemoryStream();
bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
si.Image = ms.ToArray();
}
NativeMethods.DestroyIcon(hIconSmall);
NativeMethods.DestroyIcon(hIconLarge);
}
else
{
si.Image = new byte[0];
}
}
else
{
si.Image = new byte[0];
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.ToString());
si.Image = new byte[0];
}
items.Add(si);
NativeMethods.CoTaskMemFree(pItem);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), ex.GetType().ToString());
}
finally
{
if (p != IntPtr.Zero)
{
NativeMethods.CoTaskMemFree(p);
}
if (pFolder != null)
{
Marshal.ReleaseComObject(pFolder);
}
if (pEnum != null)
{
Marshal.ReleaseComObject(pEnum);
}
}
return(items);
}
public static extern int StrRetToStr(ref STRRET pstr, IntPtr pidl, out IntPtr ppsz);