/// <summary>
/// Checks that the LocalName and NamespaceURI properties of the element found
/// matches the given strings before reading a text-only element.
/// </summary>
/// <param name="localname">The local name of the element.</param>
/// <param name="ns">The namespace URI of the element.</param>
/// <returns>The text contained in the element that was read. An empty string
/// if the element is empty (<item></item> or <item/>).</returns>
public virtual string ReadElementString(string localname, string ns)
{
string result = "";
if (MoveToContent() != XmlNodeType.Element)
{
throw new XmlException(XmlException.XmlExceptionErrorCode.InvalidNodeType);
}
XmlReader_XmlNode node = (XmlReader_XmlNode)_xmlNodes.Peek();
if (!StringRefEquals(node.LocalName, localname) ||
!StringRefEquals(node.NamespaceURI, ns))
{
throw new XmlException(XmlException.XmlExceptionErrorCode.ElementNotFound);
}
if (!_isEmptyElement)
{
result = ReadString();
if (_nodeType != XmlNodeType.EndElement)
{
throw new XmlException(XmlException.XmlExceptionErrorCode.InvalidNodeType);
}
}
Read(); // read the EndElement or the empty StartElement
return(result);
}
/// <summary>
/// Calls MoveToContent and tests if the current content node is a start tag or
/// empty element tag and if the LocalName and NamespaceURI properties of the
/// element found match the given strings.
/// </summary>
/// <param name="localname">The local name of the element.</param>
/// <param name="ns">The namespace URI of the element.</param>
/// <returns>true if the resulting node is an element. false if a node type other
/// than XmlNodeType.Element was found or if the LocalName and NamespaceURI
/// properties of the element do not match the specified strings.</returns>
public virtual bool IsStartElement(string localname, string ns)
{
if (MoveToContent() == XmlNodeType.Element)
{
XmlReader_XmlNode node = (XmlReader_XmlNode)_xmlNodes.Peek();
return(StringRefEquals(node.LocalName, localname) &&
StringRefEquals(node.NamespaceURI, ns));
}
return(false);
}
/// <summary>
/// Checks that the current content node is an element with the given LocalName and
/// NamespaceURI and advances the reader to the next node.
/// </summary>
/// <param name="localname">The local name of the element.</param>
/// <param name="ns">The namespace URI of the element.</param>
public virtual void ReadStartElement(string localname, string ns)
{
if (MoveToContent() != XmlNodeType.Element)
{
throw new XmlException(XmlException.XmlExceptionErrorCode.InvalidNodeType);
}
XmlReader_XmlNode node = (XmlReader_XmlNode)_xmlNodes.Peek();
if (StringRefEquals(node.LocalName, localname) &&
StringRefEquals(node.NamespaceURI, ns))
{
Read();
}
else
{
throw new XmlException(XmlException.XmlExceptionErrorCode.ElementNotFound);
}
}