Question

我有一个wpf应用程序，

我需要在特定的xml位置插入元素标记。



<Profile>



    <profile number = "1">

         <mode>1</mode>
         <mode>2</mode>

    </profile>

    <profile number = "2">

         <mode>1</mode>
         <mode>2</mode>

    </profile>

    <profile number = "3">

         <mode>1</mode>
         <mode>2</mode>

    </profile>

</profile>

<Profile> <profile number = "1"> <mode>1</mode> <mode>2</mode> </profile> <profile number = "2"> <mode>1</mode> <mode>2</mode> </profile> <profile number = "3"> <mode>1</mode> <mode>2</mode> </profile> </profile>

这里我想在第一个个人资料标签内添加模式标签，即

<profile number = "1">

我如何在profile标签内找到数字标签，并使用c＃插入子节点（如）。

<profile number = "1">

请帮助!!

Answer 1

您可以使用XPATH选择所需元素并向其添加子元素

string yourxml = "<Profile><profile number = \"1\"><mode>1</mode><mode>2</mode></profile><profile number = \"2\"><mode>1</mode><mode>2</mode></profile><profile number = \"3\"><mode>1</mode><mode>2</mode></profile></Profile>";
    XmlDocument doc = new XmlDocument();
    doc.LoadXml(yourxml);

    //Selecting node with number='3'
    XmlNode profile;
    XmlElement root = doc.DocumentElement;
    profile = root.SelectSingleNode("profile[@number = '3']");
    XmlElement newChild = doc.CreateElement("mode");
    newChild.InnerText = "1";
    profile.AppendChild(newChild);
    doc.Save("file path");

Answer 2

使用此sample：

 String xmlString = "<?xml version=\"1.0\"?>"+"<xmlhere>"+
    "<somenode>"+
    " <child> </child>"+
    " <children>1</children>"+ //1
    " <children>2</children>"+ //2
    " <children>3</children>"+ // 3, I need to insert it
    " <children>4</children>"+  //4,  I need to insert this second time
    " <children>5</children>"+
    " <children>6</children>"+ 
    " <child> </child>"+
    " </somenode>"+
    "</xmlhere>";

    XElement root = XElement.Parse(xmlString);
    var childrens = root.Descendants("children").ToArray();
    var third = childrens[3];
    var fourth = childrens[4];
    third.AddBeforeSelf(new XElement("children"));
    fourth.AddBeforeSelf(new XElement("children"));

    var updatedchildren = root.Descendants("children").ToArray();

在wpf c＃中的xml中的特定位置添加元素

2 个答案: