C#中忽略大小写在XML中查询 转

        /// <summary>
        /// 不分大小写查询XML节点，简单写了一下，不知道效率怎么样。
        /// 从MSDN是摘了点代码，呵呵。
        /// </summary>
        static void CompareXmlIgnoreCase()
        {
            string xml = "<root><item1 type='a'>First</item1><ITEM2 type='A'>Second</ITEM2><ITEM1 type='A'>SECOND</ITEM1></root>";
            XmlDocument _doc = new XmlDocument();
            _doc.LoadXml(xml);
            //按名称查询
            XmlNodeList l = _doc.DocumentElement.SelectNodes("//root/node()[translate(local-name(), 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz') = 'item1']");
            for (int i = 0; i < l.Count; i++)
            {
                Console.WriteLine(l[i].OuterXml);
            }
            Console.WriteLine("===================================================");
            //按某个属性比较查询
            l = _doc.DocumentElement.SelectNodes("//root/node()[translate(@type, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz') = 'a']");
            for (int i = 0; i < l.Count; i++)
            {
                Console.WriteLine(l[i].OuterXml);
            }
            Console.WriteLine("===================================================");
            //按InnerText比较查询
            l = _doc.DocumentElement.SelectNodes("//root/node()[translate(., 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz') = 'second']");
            for (int i = 0; i < l.Count; i++)
            {
                Console.WriteLine(l[i].OuterXml);
            }
        }