private void SetImagePage(int index, IMediaItem item, MyCommon.UploadFileType type)
{
var selectedIndex = ImagePageCombo.SelectedIndex;
if (index < 0) index = selectedIndex;
var media = (SelectedMedia)ImagePageCombo.Items[index];
if (media.Item != item)
{
DisposeMediaItem(media.Item);
media.Item = item;
}
media.Type = type;
AddNewImagePage(index);
}