C# xml 根据属性排序然后保存回文件，或者根据属性按顺序读取

2016-12-11 09:58:23 494 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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<?xml version="1.0" encoding="utf-8"?>

<configuration>

<item>

    <i1 Tag = "1" ></i1>

    <i2 Tag = "3" ></i2>

    <i3 Tag = "2" ></i3>

    <i7 Tag = "7" ></i7>

    <i4 Tag = "4" ></i4>

    <i5 Tag = "5" ></i5>

    <i6 Tag = "6" ></i6>

</item>

</configuration>



public void SortXMLDoc_Test(string address)

        {

            XmlDocument dom = new XmlDocument();

            dom.Load(address);

            XPathDocument pathdoc = new XPathDocument(address);

            //XmlNodeList nodes = dom.SelectSingleNode("UserPattern").ChildNodes;



XmlNode xn = dom.SelectSingleNode("configuration");



XPathNavigator nav = pathdoc.CreateNavigator();

            string xpath = String.Format("/configuration/item");

            XPathExpression exp = nav.Compile(xpath);

            exp.AddSort("@Tag",XmlSortOrder.Descending,XmlCaseOrder.None,"",XmlDataType.Text);

            XPathNodeIterator nodeIter = nav.Select(exp);



xn.RemoveAll();



while (nodeIter.MoveNext())

            {

              //  XmlElement xe = dom.createElement("Tag");

                xe.SetAttribute("Tag", nodeIter.Current.GetAttribute("Tag", ""));

                xn.AppendChild(xe);

            }

            dom.Save(address);

        }

想要的结果



<?xml version="1.0" encoding="utf-8"?>

<configuration>

<item>

    <i1 Tag = "1" ></i1>

    <i3 Tag = "2" ></i3>

    <i2 Tag = "3" ></i2>

    <i4 Tag = "4" ></i4>

    <i5 Tag = "5" ></i5>

    <i6 Tag = "6" ></i6>

    <i7 Tag = "7" ></i7>

</item>

</configuration>

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