public override bool TryGetBase64ContentLength(out int length)
{
if (_trailByteCount == 0 && _trailCharCount == 0 && _value == null)
{
XmlNode node = this.Node;
if (node.IsAtomicValue)
return node.Value.TryGetByteArrayLength(out length);
}
return base.TryGetBase64ContentLength(out length);
}