/// <summary>
/// Constructs and initializes a new instance of <see
/// cref="Tag" /> using the children of a <see
/// cref="HeaderObject" /> object.
/// </summary>
/// <param name="header">
/// A <see cref="HeaderObject" /> object whose children are
/// are to be used by the new instance.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="header" /> is <see langword="null" />.
/// </exception>
public Tag(HeaderObject header)
{
if (header == null)
{
throw new ArgumentNullException("header");
}
foreach (Object child in header.Children)
{
if (child is ContentDescriptionObject)
{
description =
child as ContentDescriptionObject;
}
if (child is ExtendedContentDescriptionObject)
{
ext_description =
child as ExtendedContentDescriptionObject;
}
}
foreach (Object child in header.Extension.Children)
{
if (child is MetadataLibraryObject)
{
metadata_library =
child as MetadataLibraryObject;
}
}
}
/// <summary>
/// Clears the values stored in the current instance.
/// </summary>
public override void Clear()
{
description = new ContentDescriptionObject();
ext_description =
new ExtendedContentDescriptionObject();
metadata_library.RemoveRecords(0, 0, "WM/Picture");
}