/// <summary>
/// Populates an object that contains a known folder's properties
/// as specified by a special path stated in <paramref name="path"/>.
/// </summary>
/// <param name="path">The path for the requested known folder; (a virtual path).</param>
/// <returns>A known folder representing the specified name.</returns>
public static IKnownFolderProperties GetFolderPropertiesFromPath(string path)
{
using (var kf = KnownFolderHelper.FromPath(path))
{
if (kf != null)
{
return(KnownFolderHelper.GetFolderProperties(kf.Obj));
}
}
return(null);
}
/// <summary>
/// Gets a strongly-typed read-only collection of all the registered known folders.
/// </summary>
/// <returns></returns>
public static Dictionary <Guid, IKnownFolderProperties> GetAllFolders()
{
// Should this method be thread-safe?? (It'll take a while
// to get a list of all the known folders, create the managed wrapper
// and return the read-only collection.
var foldersList = new Dictionary <Guid, IKnownFolderProperties>();
var pathList = new Dictionary <string, IKnownFolderProperties>();
uint count;
IntPtr folders = IntPtr.Zero;
try
{
KnownFolderManagerClass knownFolderManager = new KnownFolderManagerClass();
if (knownFolderManager.GetFolderIds(out folders, out count) != HRESULT.S_OK)
{
return(foldersList);
}
if (count > 0 && folders != IntPtr.Zero)
{
// Loop through all the KnownFolderID elements
for (int i = 0; i < count; i++)
{
// Read the current pointer
IntPtr current = new IntPtr(folders.ToInt64() + (Marshal.SizeOf(typeof(Guid)) * i));
// Convert to Guid
Guid knownFolderID = (Guid)Marshal.PtrToStructure(current, typeof(Guid));
try
{
using (var nativeKF = FromKnownFolderGuid(knownFolderID))
{
var kf = KnownFolderHelper.GetFolderProperties(nativeKF.Obj);
// Add to our collection if it's not null (some folders might not exist on the system
// or we could have an exception that resulted in the null return from above method call
if (kf != null)
{
foldersList.Add(kf.FolderId, kf);
if (kf.IsExistsInFileSystem == true)
{
IKnownFolderProperties obj;
if (pathList.TryGetValue(kf.Path.ToUpper(), out obj))
{
pathList.Add(kf.Path.ToUpper(), kf);
}
}
}
}
}
catch
{
// Catch this in case we have an exotic non-existing, non-access case
}
}
}
}
finally
{
if (folders != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(folders);
}
}
return(foldersList);
}
