/// <summary>
/// Causes the configuration system to throw an exception.
/// </summary>
/// <param name="elementName">The name of the unrecognized element.</param>
/// <param name="reader">An input stream that reads XML from the configuration file.</param>
/// <returns>
/// true if the unrecognized element was deserialized successfully; otherwise, false. The default is false.
/// </returns>
/// <exception cref="InvalidOperationException">Extensions are not referenced to this collection.</exception>
/// <exception cref="ConfigurationErrorsException">
/// </exception>
protected override bool OnDeserializeUnrecognizedElement(string elementName, System.Xml.XmlReader reader)
{
if (_extensions == null)
{
throw new InvalidOperationException("Extensions are not referenced to this collection.");
}
ExtensionElement eElement = _extensions[elementName];
Type elementType = Type.GetType(eElement.Type);
if (elementType == null)
{
throw new ConfigurationErrorsException(string.Format("Cannot load type \"{0}\"", eElement.Type));
}
if (elementType.IsSubclassOf(typeof(T)))
{
///Change the AddElementName to use the default parsing
this.AddElementName = elementName;
return(base.OnDeserializeUnrecognizedElement(elementName, reader));
}
else
{
throw new ConfigurationErrorsException(string.Format("Type \"{0}\" is not subclass of \"{1}\"", elementType.ToString(), typeof(T).ToString()));
}
}
/// <summary>
/// When overridden in a derived class, creates a new <see cref="T:System.Configuration.ConfigurationElement" />.
/// </summary>
/// <returns>
/// A newly created <see cref="T:System.Configuration.ConfigurationElement" />.
/// </returns>
protected override ConfigurationElement CreateNewElement()
{
ExtensionElement eElement = _extensions[this.AddElementName];
Type elementType = Type.GetType(eElement.Type);
return(Reflection.CreateInstance <T>(elementType));
}
