using System;
using System.IO;
using System.Linq;
using System.Xml;
using System.Xml.Linq;
using System.Xml.Serialization;

namespace XmlParserByAttribute
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            m_XmlAttribute();

            //m_XmlAttributeTech();

            //m_XmlDocument();

            //m_XmlLinq();
        }

        private static void m_XmlAttribute()
        {
            string xmlStr = @".\TestFile.xml";
            XmlSerializer serializer = new XmlSerializer(typeof(CatCollection));
            using (TextReader reader = new StreamReader(xmlStr))
            {
                CatCollection cc = serializer.Deserialize(reader) as CatCollection;
            }
        }

        private static void m_XmlAttributeTech()
        {
            string xmlStr = @".\TestTeacher.xml";
            XmlSerializer serializer = new XmlSerializer(typeof(Teacher));

            using (TextReader reader = new StreamReader(xmlStr))
            {
                Teacher result = serializer.Deserialize(reader) as Teacher;
            }
        }

        private static void m_XmlDocument()
        {
            string xmlStr = @".\TestFile.xml";
            XmlDocument doc = new XmlDocument();
            XmlReaderSettings settings = new XmlReaderSettings();
            settings.IgnoreComments = true;

            using (XmlReader xmlReader = XmlReader.Create(xmlStr, settings))
            {
                doc.Load(xmlStr);
                XmlNode xn = doc.SelectSingleNode("cats");

                XmlNodeList itemNodes = xn.ChildNodes;
                CatCollection cats = new CatCollection();
                foreach (XmlNode itemNode in itemNodes)
                {
                    Cat cat = new Cat();
                    // 读取节点数据赋值给 cat
                    cat.Color = itemNode.Attributes["color"].Value;
                    cat.animationType = (AnimationType)Enum.Parse(typeof(AnimationType), itemNode.Attributes["animationType"].Value, true);
                    var childnode = itemNode.ChildNodes;
                    cat.Saying = childnode.Item(0).InnerText;
                    cats.Cats.Add(cat);
                }
            }
        }

        private static void m_XmlLinq()
        {
            string xmlStr = @".\TestFile.xml";

            XElement xe = XElement.Load(xmlStr);
            var eles = from ele in xe.Elements()
                       select ele;
            CatCollection cc = new CatCollection();
            foreach (var ele in eles)
            {
                Cat cat = new Cat()
                {
                    Color = ele.Attribute("color").Value,
                    animationType = (AnimationType)Enum.Parse(typeof(AnimationType), ele.Attribute("animType").Value, true),
                    Saying = ele.Element("saying").Value
                };
                cc.Cats.Add(cat);
            }
        }
    }
}