C# 寫XML格式的字符串 (是否保存到硬盤)

一、XML寫入到硬盤

<span style="font-size:14px;">//文件路徑
            string fileName = "D:\\1.xml";
            //編碼方式
            XmlTextWriter writer = new XmlTextWriter(fileName, Encoding.GetEncoding("GBK"));
            writer.Formatting = Formatting.Indented;

            //XML文檔創建開始
            writer.WriteStartDocument();
                //根節點
                writer.WriteStartElement("DataArea");

                    //第一個節點
                   writer.WriteStartElement("SID", "SID_RY");
                   writer.WriteAttributeString("Row", "Test");
                   writer.WriteEndElement();

                    //第二個節點
                    writer.WriteStartElement("Data");

                    writer.WriteStartElement("Item");
                    writer.WriteElementString("ID","001");
                    writer.WriteElementString("Name", "Jackerson");
                    writer.WriteElementString("Company", "思源時代");
                    writer.WriteEndElement();

                    writer.WriteEndElement();

                writer.WriteEndElement();
            //結束文檔
            writer.WriteEndDocument();</span>

<span style="font-size:14px;"> //將XML寫入文件並且關閉XmlTextWriter
                writer.Close();
</span>

二、不保存爲文件、直接生成XML字符串

<span style="font-size:14px;"> XmlDocument xmldoc = new XmlDocument();
            //加入XML的聲明段落,<?xml version="1.0" encoding="gb2312"?>
            XmlDeclaration xmldecl;
            xmldecl = xmldoc.CreateXmlDeclaration("1.0", "GBK", null);
            xmldoc.AppendChild(xmldecl);

            //加入一個根元素
            XmlElement xmlelem = xmldoc.CreateElement("", "DataArea", "");
            xmldoc.AppendChild(xmlelem);
            //查詢根節點
            XmlNode root = xmldoc.SelectSingleNode("DataArea");
            //第一個一級節點
            XmlElement sid = xmldoc.CreateElement("SID");
            sid.InnerText = "SID_RY";
            sid.SetAttribute("Row", "Test");
            root.AppendChild(sid);
            //第二個一級節點
            XmlElement data = xmldoc.CreateElement("Data");
          
                //第一個二級節點
                XmlElement item = xmldoc.CreateElement("Item");
               
                    XmlElement xe = xmldoc.CreateElement("ID");
                    xe.InnerText = "001";
                    XmlElement xe2 = xmldoc.CreateElement("Name");
                    xe2.InnerText = "001";
                    XmlElement xe3 = xmldoc.CreateElement("Company");
                    xe3.InnerText = "001";
                    //添加三級節點
                    item.AppendChild(xe);

                data.AppendChild(item);           

            root.AppendChild(data);

            //生成的XML字符串
          string xmlStr= xmldoc.InnerXml;

            //這種方法如果想要保存，也可以
          xmldoc.Save("路徑");</span>