public IReadOnlyList<HeifItemId> GetTopLevelImageIds()Public Function GetTopLevelImageIds As IReadOnlyList(Of HeifItemId)public:
IReadOnlyList<HeifItemId>^ GetTopLevelImageIds()member GetTopLevelImageIds : unit -> IReadOnlyList<HeifItemId> | HeifException | The file does not have any top-level images. -or- Could not get all of the top-level image ids. |
| InvalidOperationException | A reader must be set before calling this method. |
| ObjectDisposedException | The object has been disposed. |