C# 修改XML

Question

<DataSource>
  <Tables>
    <Number>1</Number>
  </Tables>
</DataSource>把里面1改成2 
给出代码 

Answer 1

  //linq to xml 
  //SetAttributeValue()       
给你个参考地址： 参考
不要动不动就“给出代码”

Answer 2

        static void Main(string[] args)
        {
            XmlDocument mydoc = new XmlDocument();
            mydoc.Load(@"D:\VS_Project\CSDNProject\CSDNConsole\bin\Debug\XMLFile1.xml");            XmlNode node = mydoc.SelectSingleNode("DataSource").ChildNodes[0].ChildNodes[0];
            node.InnerText = "2";//修改内容             mydoc.Save(@"D:\VS_Project\CSDNProject\CSDNConsole\bin\Debug\XMLFile1.xml");//保存 
        }

Answer 3

一下代码仅供参考！修改XML文件里节点中的内容: 
XmlDocument xmlDoc = new XmlDocument();
        string path = Server.MapPath("~/xml/shopCityXml/2shopCity.xml");
        if (System.IO.File.Exists(path) == true)
        {            xmlDoc.Load(path);
            XmlNodeList nodeList = xmlDoc.SelectSingleNode("adXMLPath").ChildNodes;//获取bookstore节点的所有子节点
            string ID = "";
            string type = "";
            foreach (XmlNode xn in nodeList)//遍历所有子节点 
            {                if (xn.Name == "adItem")
                {
                    XmlElement xe = (XmlElement)xn;
                    XmlNodeList nls = xe.ChildNodes;//继续获取xe子节点的所有子节点 
                    foreach (XmlNode xn1 in nls)//遍历 
                    {
                        XmlElement xe2 = (XmlElement)xn1;//转换类型                         if (xe2.Name == "ID")
                        {
                            ID = xe2.InnerText.ToString();
                        }
                        if (xe2.Name == "type")
                        {
                            type = xe2.InnerText.ToString();
                        }
                        if (ID == "1" && type == "slide")
                        {
                            if (xe2.Name == "title")
                            {
                                xe2.InnerText = "";
                                xe2.AppendChild(xmlDoc.CreateCDataSection(txtSuperMarketTitle.Text.ToString().Trim()));
                            }
                            if (xe2.Name == "url")
                            {
                                xe2.InnerText = "";
                                xe2.AppendChild(xmlDoc.CreateCDataSection(txtSuperMarketLinkUrl.Text.ToString().Trim()));
                            }
                            if (xe2.Name == "imgUrl")
                            {
                                xe2.InnerText = "";
                                if (upLoad1.M_upLoadError == "succes")
                                {
                                    xe2.AppendChild(xmlDoc.CreateCDataSection(upLoad1.M_upLoadUrlAddress));
                                    if (upLoad1.M_oldUrlAddress != "" && upLoad1.M_oldUrlAddress != "../testImages/IM.jpg")
                                    {
                                        string ImageUrl = Server.MapPath(upLoad1.M_oldUrlAddress);
                                        File.Delete(ImageUrl);
                                    }
                                }
                                else
                                {
                                    xe2.AppendChild(xmlDoc.CreateCDataSection(upLoad1.M_oldUrlAddress));
                                }
                            }
                            if (xe2.Name == "directions")
                            {
                                xe2.InnerText = "";
                                xe2.AppendChild(xmlDoc.CreateCDataSection(txtDescription.Text.ToString().Trim()));                                break;
                            }
                        }
                    }                }
            }
            FileInfo fi = new FileInfo(path);
            if (fi.Attributes.ToString().IndexOf("ReadOnly") != -1)
            {
                fi.Attributes = FileAttributes.Normal;
            }
            xmlDoc.Save(path);
        }