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Question

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  不好意思。各位大虾，请问：怎么样把一个数据库服务器登陆安装界面上的信息（ID,PWD等）写入一个XML文件中去

Answer 1

using System;
using System.Xml;public class Sample {  public static void Main() {
 
    // Create the XmlDocument.
    XmlDocument doc = new XmlDocument();
    doc.LoadXml("<item><name>wrench</name></item>");    // Add a price element.
    XmlElement newElem = doc.CreateElement("price");
    newElem.InnerText = "10.95";
    doc.DocumentElement.AppendChild(newElem);    // Save the document to a file. White space is
    // preserved (no white space).
    doc.PreserveWhitespace = true;
    doc.Save("data.xml");
 
  }
}

Answer 2

//利用DataSet把数据写入XML文件，不实现追加
    public static string SaveXML_DataSet(BaseInfo.Phonebook pb)
    {
        try
        {
            DataTable dt = new DataTable();
            dt.Columns.Add("name", Type.GetType("System.String"));
            dt.Columns.Add("telphone", Type.GetType("System.String"));
            dt.Columns.Add("qq", Type.GetType("System.String"));
            dt.Columns.Add("msn", Type.GetType("System.String"));
            dt.Columns.Add("cellphone", Type.GetType("System.String"));
            dt.Columns.Add("workplace", Type.GetType("System.String"));
            dt.Columns.Add("address", Type.GetType("System.String"));
            dt.Columns.Add("email", Type.GetType("System.String"));            DataRow dr = dt.NewRow();
            dr[0] = pb.name;
            dr[1] = pb.telphone;
            dr[2] = pb.qq;
            dr[3] = pb.msn;
            dr[4] = pb.cellphone;
            dr[5] = pb.workplace;
            dr[6] = pb.address;
            dr[7] = pb.email;            dt.Rows.Add(dr);
            System.Data.DataSet ds = new DataSet();
            ds.Tables.Add(dt);            //将DataSet里面的数据写入XML
            ds.WriteXml(System.Web.HttpContext.Current.Server.MapPath("phonebook.xml"));
            
            return "true";
        }
        catch(Exception ex)
        {
            return ex.ToString();
        }
    }    
    //利用xmlTextWriter往XML文件写入数据,没有实现追加
    public static string SaveXMLData_XmlTextWriter(BaseInfo.Phonebook pb)
    {
        try
        {
            //创建一个XmlTextWriter类的实例对象
            System.IO.FileInfo file = new FileInfo(System.Web.HttpContext.Current.Server.MapPath("phonebook.xml"));
            //if (!file.Exists)
          
            XmlTextWriter textWriter = new XmlTextWriter(System.Web.HttpContext.Current.Server.MapPath("phonebook.xml"), System.Text.Encoding.UTF8);
            
            //开始写过程，调用WriterStartDocument方法写入文件头信息
            //例如<?xml version="1.0" encoding="utf-8"?>
            textWriter.WriteStartDocument();            //写入根节点<phonebook></phonebook>
            textWriter.WriteStartElement("phonebook");
            textWriter.WriteStartElement("member");            //写入节点name
            textWriter.WriteStartElement("name", "");
            //为name节点写入用户输入的值
            textWriter.WriteString(pb.name);
            //写入name节点的结束符
            textWriter.WriteEndElement();            textWriter.WriteStartElement("telphone", "");
            textWriter.WriteString(pb.telphone);
            textWriter.WriteEndElement();            textWriter.WriteStartElement("qq", "");
            textWriter.WriteString(pb.qq);
            textWriter.WriteEndElement();            textWriter.WriteStartElement("msn", "");
            textWriter.WriteString(pb.msn);
            textWriter.WriteEndElement();            textWriter.WriteStartElement("cellphone", "");
            textWriter.WriteString(pb.cellphone);
            textWriter.WriteEndElement();            textWriter.WriteStartElement("workplace", "");
            textWriter.WriteString(pb.workplace);
            textWriter.WriteEndElement();            textWriter.WriteStartElement("address", "");
            textWriter.WriteString(pb.address);
            textWriter.WriteEndElement();            textWriter.WriteStartElement("email", "");
            textWriter.WriteString(pb.email);
            textWriter.WriteEndElement();            //写入文档结束，调用WriteEndDocument方法
            textWriter.WriteEndDocument();            //关闭textWriter
            textWriter.Close();            return "true";        
        }
        catch (Exception ex)
        {
            return ex.ToString();
        }
    }
    //利用XmlNode往XML文件写入数据,可以实现追加
    public static string SaveXMLData_XmlNode(BaseInfo.Phonebook pb)
    {
        try
        {
            //创建一个XmlDocument 对象，用于载入存储信息的XML文件
            System.Xml.XmlDocument xdoc = new XmlDocument();
            xdoc.Load(System.Web.HttpContext.Current.Server.MapPath("phonebook.xml"));
            //创建一个menber节点并将它添加到根节点下
            XmlElement parentNode = xdoc.CreateElement("member");
            xdoc.DocumentElement.PrependChild(parentNode);
            //创建所有用于存储信息的节点
            XmlElement nameNode = xdoc.CreateElement("name");
            XmlElement telphoneNode = xdoc.CreateElement("telphone");
            XmlElement qqNode = xdoc.CreateElement("qq");
            XmlElement msnNode = xdoc.CreateElement("msn");
            XmlElement cellphoneNode = xdoc.CreateElement("cellphone");
            XmlElement workplaceNode = xdoc.CreateElement("workplace");
            XmlElement addressNode = xdoc.CreateElement("address");
            XmlElement emailNode = xdoc.CreateElement("email");            ///获取文本信息
            XmlText nameText = xdoc.CreateTextNode(pb.name);
            XmlText telphoneText = xdoc.CreateTextNode(pb.telphone);
            XmlText qqText = xdoc.CreateTextNode(pb.qq);
            XmlText msnText = xdoc.CreateTextNode(pb.msn);
            XmlText cellphoneText = xdoc.CreateTextNode(pb.cellphone);
            XmlText workplaceText = xdoc.CreateTextNode(pb.workplace);
            XmlText addressText = xdoc.CreateTextNode(pb.address);
            XmlText emailText = xdoc.CreateTextNode(pb.email);            ///将上面的各个存储信息节点添加到menber节点下，但并不包含最终的值
            parentNode.AppendChild(nameNode);
            parentNode.AppendChild(telphoneNode);
            parentNode.AppendChild(qqNode);
            parentNode.AppendChild(msnNode);
            parentNode.AppendChild(cellphoneNode);
            parentNode.AppendChild(workplaceNode);
            parentNode.AppendChild(addressNode);
            parentNode.AppendChild(emailNode);            ///将上面获取的文本信息添加到与之相对应的节点中
            nameNode.AppendChild(nameText);
            telphoneNode.AppendChild(telphoneText);
            qqNode.AppendChild(qqText);
            msnNode.AppendChild(msnText);
            cellphoneNode.AppendChild(cellphoneText);
            workplaceNode.AppendChild(workplaceText);
            addressNode.AppendChild(addressText);
            emailNode.AppendChild(emailText);            ///保存存储信息的XML文件
            xdoc.Save(System.Web.HttpContext.Current.Server.MapPath("phonebook.xml"));            return "true";
        }
        catch (Exception ex)
        {
            return ex.ToString();
        }
    }
给个例子吧

Answer 3

google 搜索
xml的读取 写入