向XML插入节点

假如现在有一个Xml文件，内容如下：

<ReportItems>

  <Line Name="line2">

    <Top>3.75cm</Top>

    <Width>0.2381cm</Width>

    <Style>

      <BorderStyle>

        <Default>Solid</Default>

      </BorderStyle>

      <FontFamily>宋体</FontFamily>

    </Style>

    <ZIndex>2</ZIndex>

    <Left>3.75cm</Left>

    <Height>0.50265cm</Height>

  </Line>

</ReportItems>

 

现需要向下面的Xml文件内容的ReportItems节点下添加内容，变成下面的样子：

<ReportItems>
  <Textbox Name="textbox1">
    <Top>1.5cm</Top>
    <Width>2.75cm</Width>
    <Style>
      <FontFamily>宋体</FontFamily>
      <PaddingLeft>2pt</PaddingLeft>
      <PaddingRight>2pt</PaddingRight>
      <PaddingTop>2pt</PaddingTop>
      <PaddingBottom>2pt</PaddingBottom>
    </Style>
    <ZIndex>4</ZIndex>
    <CanGrow>true</CanGrow>
    <Left>20.25cm</Left>
    <Height>2.25cm</Height>
    <Value>Hello World</Value>
  </Textbox>
  <Line Name="line1">
    <Top>3.75cm</Top>
    <Width>0.2381cm</Width>
    <Style>
      <BorderStyle>
        <Default>Solid</Default>
      </BorderStyle>
      <FontFamily>宋体</FontFamily>
    </Style>
    <ZIndex>2</ZIndex>
    <Left>3.75cm</Left>
    <Height>0.50265cm</Height>
  </Line>
</ReportItems> 

转换代码如下：

string file = File.ReadAllText(filePath); //filePath是Xml存放的完整路径

TextReader textReader = new StringReader(file);

XElement doc = XElement.Load(textReader);

XElement node = doc.Descendants().Where(c => c.Name.LocalName == "ReportItems").First(); //Name是包含命名空间的，LocalName不包含

XNamespace ns = doc.Name.NamespaceName;

XElement e = new XElement(ns + "Textbox", new XAttribute("Name", "textbox1"), //为节点添加属性

    new XElement(ns + "Top", "1.5cm"), //在每个节点的名称前都要加上命名空间，不然会有xmlns:""的属性出现

    new XElement(ns + "Width", "2.75cm"),

    new XElement(ns + "Style",

        new XElement(ns + "FontFamily", "宋体"),

        new XElement(ns + "PaddingLeft", "2pt"),

        new XElement(ns + "PaddingRight", "2pt"),

        new XElement(ns + "PaddingTop", "2pt"),

        new XElement(ns + "PaddingBottom", "2pt"),

        new XElement(ns + "Color", "#FFFFFF"),

        new XElement(ns + "BackgroundColor", "#3F2FAF"),

        new XElement(ns + "FontSize", "5pt")),

     new XElement(ns + "ZIndex", "4"),

     new XElement(ns + "CanGrow", "true"),

     new XElement(ns + "Left", "20.25cm"),

     new XElement(ns + "Height", "2.25cm"),

     new XElement(ns + "Value", "Hello World"));



node.Add(e); //追加构造好的节点

doc.Save(filePath); //保存到文件

这样就可以了~~~