private void ClearImagePage(int index)
{
var selectedIndex = ImagePageCombo.SelectedIndex;
if (index < 0) index = selectedIndex;
var media = (SelectedMedia)ImagePageCombo.Items[index];
DisposeMediaItem(media.Item);
media.Item = null;
media.Type = MyCommon.UploadFileType.Invalid;
if (index == selectedIndex)
{
ImagefilePathText.Text = "";
AlternativeTextBox.Text = "";
}
}