private static System.Collections.ObjectModel.ReadOnlyCollection <IKnownFolder> 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 WinCopies.Collections.
#if WAPICP3
Generic.
#endif
ArrayBuilder <IKnownFolder>();
IntPtr folders = IntPtr.Zero;
try
{
new KnownFolderManagerClass().GetFolderIds(out folders, out uint count);
if (count > 0 && folders != IntPtr.Zero)
{
// Loop through all the KnownFolderID elements
for (int i = 0; i < count; i++)
{
// Convert to Guid
var knownFolderID = (Guid)Marshal.PtrToStructure(new IntPtr(folders.ToInt64() + (Marshal.SizeOf(typeof(Guid)) * i)), typeof(Guid));
IKnownFolder kf = KnownFolderHelper.FromKnownFolderIdInternal(knownFolderID);
// 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.AddLast(kf);
}
}
}
}
finally
{
if (folders != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(folders);
}
}
return(new System.Collections.ObjectModel.ReadOnlyCollection <IKnownFolder>(foldersList.ToList()));
}
private static ReadOnlyCollection <IKnownFolder> 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.
IList <IKnownFolder> foldersList = new List <IKnownFolder>();
uint count;
IntPtr folders = IntPtr.Zero;
try
{
KnownFolderManagerClass knownFolderManager = new KnownFolderManagerClass();
knownFolderManager.GetFolderIds(out folders, out count);
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));
IKnownFolder kf = KnownFolderHelper.FromKnownFolderIdInternal(knownFolderID);
// 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);
}
}
}
}
finally
{
if (folders != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(folders);
}
}
return(new ReadOnlyCollection <IKnownFolder>(foldersList));
}