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

[hao270431700]

<?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>

[以专业开发人员为伍]

贴出你自己的 bug 调试来。

[娃都会打酱油了]

XElement.Parse(xml).Element("item").OrderBy(e=>e.Attribute["Tag"].Value)

[hao270431700]

引用 2 楼 starfd 的回复:

XElement.Parse(xml).Element("item").OrderBy(e=>e.Attribute["Tag"].Value)

XElement对象里 没有OrderBy 这个属性。套路不对啊！

[娃都会打酱油了]

引用 3 楼 hao270431700 的回复:

[quote=引用 2 楼 starfd 的回复:]

XElement.Parse(xml).Element("item").OrderBy(e=>e.Attribute["Tag"].Value)

XElement对象里 没有OrderBy 这个属性。套路不对啊！[/quote] 你没有using

using System.Xml.Linq