/// <summary>
/// 取节点属性
/// </summary>
/// <param name="node">XmlNode扩展</param>
/// <param name="attributeName">属性名</param>
/// <param name="defaultValue">默认值</param>
/// <returns></returns>
public static string GetAttribute(this XmlNode node, string attributeName, string defaultValue)
{
XmlAttribute attribute = node.Attributes[attributeName];
return(attribute.IsNotNull() ? attribute.InnerText : defaultValue);
}
