//以前收集的代码，平时用linq to xml
//第一种方式 序列化
[XmlRoot("products")]
    public class Products
    {
        [XmlElement("product")]
        public Product[] Items { get; set; }
    }
    public class Product
    {
        [XmlAttribute(AttributeName = "name")]
        public string Name { get; set; }
        [XmlAttribute(AttributeName = "price")]
        public decimal Price { get; set; }
        [XmlAttribute(AttributeName = "supplier")]
        public decimal Supplier { get; set; }
    }

using (TextReader reader = new StreamReader("1.xml"))
            {
                var serializer = new XmlSerializer(typeof(Products));
                var items = (Products)serializer.Deserialize(reader);
                if (items != null)
                {
                    // items.Items 
                }
                else
                {
                }
            }

//第二种方式 linq to xml
XDocument xdoc = XDocument.Load("1.xml");
            XElement root = xdoc.Root; //products 
            IEnumerable<XElement> ps = root.Elements(); //product（集合）下的所有元素
            foreach (var item in ps)
            {
                IEnumerable<XAttribute> attrs = item.Attributes(); //每个product下每个属性(集合)
                //foreach (var attr in attrs)
                //{
                //    //stringBuilder.AppendFormat("{0}:{1}\n", attr.Name, attr.Value);
                //}
            }