c# 中怎么把信息写入xml文件

2010-08-05 10:18:13 495 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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<name>123</name>

<age>123</age>

怎么写一个上边那样的xml文件，要求xml是自动生成的以前没有

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rysmissyou

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切换为时间正序

Ryan20082009 2010-08-05

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public void TypeObjectToXmlString()
{
string file1 = @"..\Test\Spoke\Manual\Lp\Mstr\Samples\SBAMSTR-Part.TXT";
FileClass d = new FileClass();
d.vendorCode = "Lp";
d.fileCode= "Mstr";
d.file = file1;
try
{
System.Xml.Serialization.XmlSerializer writer =
new System.Xml.Serialization.XmlSerializer(typeof(FileClass));
System.IO.StreamWriter file = new System.IO.StreamWriter(@"D:\FileClass.xml");
writer.Serialize(file, d);
file.Close();
Console.WriteLine("Success!");
}
catch (Exception e)
{
Console.WriteLine(e);
}

}
这个我已经测试成功

一克代码 2010-08-05

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/// <param name="attribute">属性名，非空时修改该节点属性值，否则修改节点值</param>

mountroste 2010-08-05

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XML是什么文件啊

rysmissyou 2010-08-05

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问下修改里的 attribute 是什么的值啊

guohelv0519 2010-08-05

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上述代码已经很全面了，彻底模拟了数据库数据操作：增删改查。

一克代码 2010-08-05

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用我给你的类

直接修改就行了啊！

里面有添加

修改
删除

rysmissyou 2010-08-05

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这个问题解决了，谢谢大家
又有个问题xml和上边的一样，我想直接改变name和age的值怎么操作啊！！
谢谢了

happyer_longlong 2010-08-05

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很好上面的代码

一克代码 2010-08-05

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  /// <summary>

        /// 删除数据

        /// </summary>

        /// <param name="path">路径</param>

        /// <param name="node">节点</param>

        /// <param name="attribute">属性名，非空时删除该节点属性值，否则删除节点值</param>

        /// <param name="value">值</param>

        /// <returns></returns>

        /**************************************************

         * 使用示列:

         * XmlHelper.Delete(path, "/Node", "")

         * XmlHelper.Delete(path, "/Node", "Attribute")

         ************************************************/

        public static void Delete(string path, string node, string attribute)

        {

            // XmlDocument doc = new XmlDocument();

            // doc.Load(path);

            // XmlNode xn = doc.SelectSingleNode(node);

            // string mainNode = node.Substring(0, node.LastIndexOf("/"));

            //doc.SelectSingleNode(mainNode).RemoveChild(doc.SelectSingleNode(node));



            try

            {

                XmlDocument doc = new XmlDocument();

                doc.Load(path);

                // XmlNode xn = doc.SelectSingleNode(node);

                XmlNodeList xnl = doc.SelectSingleNode(node).ChildNodes;

                foreach (XmlNode xn in xnl)

                {

                    XmlNodeList xnl1 = xn.SelectSingleNode("RedirectUrl").ChildNodes;

                    XmlElement xe = (XmlElement)xn;

                    for (int j = 0; j < xnl1.Count; j++)

                    {

                        XmlElement xe1 = (XmlElement)xnl1.Item(j);

                        if (xe1.GetAttribute("UrlName") == "小路工作室1231231231")

                        {

                            xn.RemoveChild(xe1);

                            if (j < xnl1.Count) j = j - 1;

                        }

                    }

                  

                }



                doc.Save(path);

            }

            catch { }

        }



        /// <summary>

        /// 删除属性带key的节点,key:GUID

        /// </summary>

        /// <param name="path">XML文件路径</param>

        /// <param name="rootnode">根节点</param>

        /// <param name="key">key:Guid</param>

        /// <param name="msg">返回的信息</param>

        public static void DeleteXMLNode(string path, string rootnode, string znode,string type,string key)

        {

          try

            {

            if (System.IO.File.Exists(path))

            {

                XmlDocument xmlDoc = new XmlDocument();

                xmlDoc.Load(path);

                XmlNodeList xl = xmlDoc.SelectSingleNode(rootnode).ChildNodes;

                for (int i = 0; i < xl.Count; i++)

                {

                    XmlElement xe = (XmlElement)xl[i];//第i个dbGust子节点

                    XmlNodeList node = xe.GetElementsByTagName(znode);

                    if (node.Count > 0)

                    {

                        for (int j = 0; j < node.Count; j++)

                        {

                            XmlNode node1 = node.Item(j);

                            XmlElement xe1 = (XmlElement)node.Item(j);

                            if (xe1.GetAttribute(type) == key)

                            {

                                xmlDoc.SelectSingleNode(rootnode).RemoveChild(node[0].ParentNode);//删除该节点

                                break;

                            }

                        }

                       

                    }

                }

                

                    xmlDoc.Save(path);

                }

          }

                catch (XmlException ex)

                {



                }



            }

            /// <summary>

            /// 返回符合指定名称的节点数

            /// </summary>

            /// <param name="nodeName">节点名</param>

            /// <returns>节点数</returns>

            public static int Count(string path,string nodeName,string znode)

            {

                try

                {

                    XmlDocument xmlDoc = new XmlDocument();

                    xmlDoc.Load(path);

                    XmlElement xe = (XmlElement)xmlDoc.SelectSingleNode(nodeName); //查找根node节点

                    XmlNodeList nodeList = xe.GetElementsByTagName(znode);

                    return nodeList.Count;

                }

                catch (Exception e)

                {

                    throw (new Exception(e.Message));

                }

            }

        /// <summary>

        /// 返回最后的数字

        /// </summary>

        /// <param name="path"></param>

        /// <param name="nodeName"></param>

        /// <param name="znode"></param>

        /// <returns></returns>

        public static string num(string path, string nodeName, string znode,string type)

        {

            try

            {

                XmlDocument xmlDoc = new XmlDocument();

                xmlDoc.Load(path);

                XmlElement xe = (XmlElement)xmlDoc.SelectSingleNode(nodeName); //查找根node节点

                XmlNodeList nodeList = xe.GetElementsByTagName(znode);

                int i = nodeList.Count;

                XmlElement xe1 = (XmlElement)nodeList.Item(nodeList.Count-1);

                string inum=xe1.GetAttribute(type);

                 

                return inum;

            }

            catch (Exception e)

            {

                throw (new Exception(e.Message));

            }

        }

        }

      

    }

一克代码 2010-08-05

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给你一个xml操作类：



using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Xml;

using System.Collections.Generic;



namespace NetView.Models

{

   

    /// <summary>

    /// XmlHelper 的摘要说明

    /// </summary>

    public class XmlHelper

    {

        private string msg;

        public XmlHelper()

        {

        }



        /// <summary>

        /// 读取数据

        /// </summary>

        /// <param name="path">路径</param>

        /// <param name="node">节点</param>

        /// <param name="attribute">属性名，非空时返回该属性值，否则返回串联值</param>

        /// <returns>string</returns>

        /**************************************************

         * 使用示列:

         * XmlHelper.Read(path, "/Node", "")

         * XmlHelper.Read(path, "/Node/Element[@Attribute='Name']", "Attribute")

         ************************************************/

        public static string Read(string path, string node, string attribute)

        {

            string value = "";

            try

            {

                XmlDocument doc = new XmlDocument();

                doc.Load(path);

                XmlNode xn = doc.SelectSingleNode(node);

                value = (attribute.Equals("") ? xn.InnerText : xn.Attributes[attribute].Value);

            }

            catch { }

            return value;

        }





       



        /// <summary>

        /// 插入

        /// </summary>

        /// <param name="path"></param>

        /// <param name="node"></param>

        /// <param name="node1"></param>

        /// <param name="element"></param>

        /// <param name="attribute"></param>

        /// <param name="value"></param>

        public static void Insert(string path, string node, string node1, string element, string attribute, string value, string attribute1, string value1)

        {

            try

            {

                XmlDocument doc = new XmlDocument();

                doc.Load(path);

                XmlNode xn = doc.SelectSingleNode(node); //查找根node节点

                XmlElement xel = doc.CreateElement(node1);

                

                XmlElement xe = doc.CreateElement(element);

                if (attribute.Equals(""))

                    xe.InnerText = value;

                else

                    xe.SetAttribute(attribute, value);

                xe.SetAttribute(attribute1, value1);

                xel.AppendChild(xe);

                xn.AppendChild(xel);

                //}

                doc.Save(path);



            }

            catch { }

        }

        /// <summary>

        /// 插入数据

        /// </summary>

        /// <param name="path">路径</param>

        /// <param name="node">节点</param>

        /// <param name="element">元素名，非空时插入新元素，否则在该元素中插入属性</param>

        /// <param name="attribute">属性名，非空时插入该元素属性值，否则插入元素值</param>

        /// <param name="value">值</param>

        /// <returns></returns>

        /**************************************************

         * 使用示列:

         * XmlHelper.Insert(path, "/Node", "Element", "", "Value")

         * XmlHelper.Insert(path, "/Node", "Element", "Attribute", "Value")

         * XmlHelper.Insert(path, "/Node", "", "Attribute", "Value")

         ************************************************/

        public static void Insert(string path, string node, string element, string attribute, string value)

        {

            try

            {

                XmlDocument doc = new XmlDocument();

                doc.Load(path);

                XmlNode xn = doc.SelectSingleNode(node);

                if (element.Equals(""))

                {

                    if (!attribute.Equals(""))

                    {

                        XmlElement xe = (XmlElement)xn;

                        xe.SetAttribute(attribute, value);

                    }

                }

                else

                {

                    XmlElement xe = doc.CreateElement(element);

                    if (attribute.Equals(""))

                        xe.InnerText = value;

                    else

                        xe.SetAttribute(attribute, value);

                    xn.AppendChild(xe);

                }

                doc.Save(path);

            }

            catch { }

        }



        /// <summary>

        /// 修改数据

        /// </summary>

        /// <param name="path">路径</param>

        /// <param name="node">节点</param>

        /// <param name="attribute">属性名，非空时修改该节点属性值，否则修改节点值</param>

        /// <param name="value">值</param>

        /// <returns></returns>

        /**************************************************

         * 使用示列:

         * XmlHelper.Insert(path, "/Node", "", "Value")

         * XmlHelper.Insert(path, "/Node", "Attribute", "Value")

         ************************************************/

        public static void Update(string path, string node, string attribute, string value)

        {

            try

            {

                XmlDocument doc = new XmlDocument();

                doc.Load(path);

                XmlNode xn = doc.SelectSingleNode(node);

                XmlElement xe = (XmlElement)xn;

                if (attribute.Equals(""))

                    xe.InnerText = value;

                else

                    xe.SetAttribute(attribute, value);

                doc.Save(path);

            }

            catch { }

        }

wuyq11 2010-08-05

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XmlDocument xmldoc = new XmlDocument();
XmlNode xmlnode = xmldoc.CreateXmlDeclaration("1.0", "gb2312", null);
xmldoc.AppendChild(xmlnode);

xmldoc.Save(Server.MapPath("a.xml"));

XmlDocument xmldoc = new XmlDocument();
xmldoc.LoadXml("<?xml version='1.0' encoding='gb2312'?>...");
xmldoc.Save(Server.MapPath("a.xml")); //保存

wuyq11 2010-08-05

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XmlWriterSettings settings = new XmlWriterSettings();
settings.OmitXmlDeclaration = true;
XmlWriter writer = XmlWriter.Create(@"c:\my.xml",settings);
writer.WriteStartDocument();
writer.WriteStartElement("");
writer.WriteEndElement();

deknight 2010-08-05

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[Quote=引用 4 楼 rysmissyou 的回复:]
C# code
// 创建XmlTextWriter类的实例对象
XmlTextWriter textWriter = new XmlTextWriter("login.xml",null);
textWriter.Formatting = Formatting.Indented;
……
[/Quote]
...你不save当然不会有...
textWriter.save()

rysmissyou 2010-08-05

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 // 创建XmlTextWriter类的实例对象

                    XmlTextWriter textWriter = new XmlTextWriter("login.xml",null);

                    textWriter.Formatting = Formatting.Indented;

                    // 开始写过程，调用WriteStartDocument方法

                    textWriter.WriteStartDocument();

                    //创建一个节点

                    textWriter.WriteStartElement("user");

                    textWriter.WriteElementString("name", "123");

                    textWriter.WriteElementString("age", "456");

                    textWriter.WriteEndElement();

                    // 写文档结束，调用WriteEndDocument方法

                    textWriter.WriteEndDocument();



                    // 关闭textWriter

                    textWriter.Close();

我这样写行吗？为什么执行了，没有创建这个文件那？

gomoku 2010-08-05

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string name = 123;

int age = 123;



string xmlSnippet = string.Format(

    CultureInfo.InvariantCulture,

    "<name>{0}</namd><age>{1}</age>",

    name, age);

liumj2001 2010-08-05

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XmlNode xNode;
xNode = xdoc.DocumentElement;
XmlNodeList xnl;
XmlElement xn;
foreach (XmlNode cNode in xNode.ChildNodes)
{
//更改连接
if (cNode.Name == "DataSources")
{
foreach (XmlNode dNode in cNode.ChildNodes)
{
xn = (XmlElement)dNode;
if (xn.GetAttribute("Name") == "DS1")
{
xnl = xn.ChildNodes;
foreach (XmlNode qNode in xnl)
{
if (qNode.Name == "ConnectionProperties")
{
foreach (XmlNode sNode in qNode.ChildNodes)
{
if (sNode.Name == "ConnectString")
{
sNode.InnerText = connstr;
break;
}
}
}
}
}
}
}

rysmissyou 2010-08-05

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急......

c# 中怎么把信息写入xml文件

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