关于XML数据的处理【总结】

//以下两种方法将获得的数据另存成XML

              第一种: using (FileStream lv_YieldFs = new FileStream(saveFileDialog_result.FileName, FileMode.Append, FileAccess.Write))

              {

                    using (StreamWriter lv_Yieldsw = new StreamWriter(lv_YieldFs))

                    {

                        lv_Yieldsw.Write(lv_msg );

                        lv_Yieldsw.Flush();

                    }}

                第二种: XmlDocument lv_XmlDoc = new XmlDocument();

                lv_XmlDoc.LoadXml(lv_msg);

                lv_XmlDoc.PreserveWhitespace = true;

                lv_XmlDoc .Save (saveFileDialog_result .FileName );

XML的寫入：

FileStream fs = new FileStream("products.xml", FileMode.Create);
        XmlWriter w = XmlWriter.Create(fs);
        w.WriteStartDocument();
        w.WriteStartElement("products");

        w.WriteStartElement ("product");
        w.WriteAttributeString("id", "1001");
        w.WriteElementString("productName", "Gourmet Coffee");
        w.WriteElementString("productPrice", "0.99");
        w.WriteEndElement();

        w.WriteStartElement("product");
        w.WriteAttributeString("id", "1002");
        w.WriteElementString("productName", "Tea Pot");
        w.WriteElementString("productPrice", "12.99");
        w.WriteEndElement();

        w.WriteEndElement();
        w.WriteEndDocument();
        w.Flush();
        fs.Close();

xml(多行相同的)的存取：

1. <events>
2.   <event>
3.     <date>sample date 1</date>
4.     <name>sample name 1</name>
5.   </event>
6.   <event>
7.     <date>sample date 2</date>
8.     <name>sample name 2</name>
9.   </event>
10.  XmlDocument doc = new XmlDocument();
11.             doc.Load(URLString);
12.             XmlElement root = doc.DocumentElement;
13.             XmlNodeList   nodes = root.SelectNodes("//events"); 
14.  
15.             foreach (XmlNode  node   in   nodes)
16.             {
17.                 string date = node["date"].InnerText;
18.                 string name = node["name"].InnerText;
19.                 MessageBox.Show("Date:"+date+" Name:"+name);
20. 11.             }

精确查找某个节点：

                XmlDocument lv_XMLDoc = new XmlDocument();
                XmlNode lv_XMLNode;
                lv_XMLDoc.Load(lv_XMLPath[0]);                                             
                lv_XMLNode = lv_XMLDoc.DocumentElement.SelectSingleNode("INFO/**");
                string lv = lv_XMLNode.InnerText;