public static bool TryRead <T>(XmlNode parentNode, string attributeName, Converter <string, T> converter, ref T value)
{
ArgumentHelper.AssertNotNull <XmlNode>(parentNode, "parentNode");
ArgumentHelper.AssertNotEmpty(attributeName, "attributeName");
ArgumentHelper.AssertNotNull <Converter <string, T> >(converter, "converter");
XmlAttribute attr = parentNode.Attributes[attributeName];
if (null == attr)
{
return(false);
}
else
{
value = converter(attr.Value);
return(true);
}
}
public static T Read <T>(XmlNode parentNode, string attributeName, Converter <string, T> converter, T defaultValue, bool throwExceptionIfMissing)
{
ArgumentHelper.AssertNotNull <XmlNode>(parentNode, "parentNode");
ArgumentHelper.AssertNotEmpty(attributeName, "attributeName");
ArgumentHelper.AssertNotNull <Converter <string, T> >(converter, "converter");
XmlAttribute attr = parentNode.Attributes[attributeName];
if (null == attr)
{
if (throwExceptionIfMissing)
{
throw new ConfigurationErrorsException("Missing @" + attributeName + " attribute. This value should is required.", parentNode);
}
else
{
return(defaultValue);
}
}
else
{
return(converter(attr.Value));
}
}