XML读操作(Professional ASP.NET 2.0 XML)

 在网上找了半天找到本英文的<<Professional ASP.NET 2.0 XML>>.无奈之下,对起进行了学习,特把一些例子记录下来,供参考.主要是中文翻译的都要钱!

        这几个小例子是读XML文件,读XML文件的全部节点或部分节点等!都用XmlDocument类!

1.books.xml

 

<?xml version='1.0'?>
<!-- This file represents a fragment of a book store inventory database  -->
<bookstore>
<book genre="autobiography">
<title>The Autobiography of Benjamin Franklin</title>
<author>
<first-name>Benjamin</first-name>
<last-name>Franklin</last-name>
</author>
<price>8.99</price>
</book>
<book genre="novel">
<title>The Confidence Man</title>
<author>
<first-name>Herman</first-name>
<last-name>Melville</last-name>
</author>
<price>11.99</price>
</book>
<book genre="philosophy">
<title>The Gorgias</title>
<author>
<name>Plato</name>
</author>
<price>9.99</price>
</book>
</bookstore>

 

2.Default.aspx.cs

 

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.Data.SqlClient;
/**//// <summary>
/// 功能:通过<<Professional ASP.NET2.0 XML-Chapter Six>>上面的例子学习XML
/// 编码:邓古谚 flyin2006
/// 时间:2006.9.15
/// </summary>

public partial class _Default : System.Web.UI.Page
...{
    Page_Load() 例一到例四都是读xml ;#region Page_Load() 例一到例四都是读xml ;
    protected void Page_Load(object sender, EventArgs e)
    ...{
        Response.Write("例子一:加载xml数据，然后调用显示函数"+"</br>");
        TwoLoadXmlExample();

        Response.Write("</br>");
        Response.Write("</br>" + "例子二:显示xml全部节点" + "</br>");
        GetAllNodes();
       
        Response.Write("</br>"+"例子三:显示xml特定节点"+"</br>");
        GetSpecificallyNodes();
       
        Response.Write("</br>" + "例子四:操作某一节点下的子树用XmlNodeReader方法" + "</br>");
        OperationSubTreeUsingXmlNodeReader();
    }
    #endregion

    例子四:操作某一节点下的子树用XmlNodeReader方法 SubTree#region 例子四:操作某一节点下的子树用XmlNodeReader方法 SubTree
    protected void OperationSubTreeUsingXmlNodeReader()
    ...{
        string xmlPath = Request.PhysicalApplicationPath + @"/App_Data/Books.xml";
        XmlDocument booksDocument = new XmlDocument();
        booksDocument.Load(xmlPath);
        XmlNode node = booksDocument.SelectSingleNode("/bookstore/book[@genre='autobiography']");
        XmlNodeReader nodeReader = new XmlNodeReader(node);
        while (nodeReader.Read())
        ...{
            if (nodeReader.NodeType == XmlNodeType.Element)
            ...{
                Response.Write("NodeType is Element: NodeName="+nodeReader.Name.ToString()+"</br>");
            }
            if (nodeReader.NodeType == XmlNodeType.Text)
            ...{
                Response.Write("NodeType is Text: NodeName=" + nodeReader.Value.ToString() + "</br>");
            }
        }
    }
    #endregion

    例子三:显示xml特定节点 Example:Using Method GetElementsByTagName#region 例子三:显示xml特定节点 Example:Using Method GetElementsByTagName
    protected void GetSpecificallyNodes()
    ...{
        string xmlPath = Request.PhysicalApplicationPath + @"/App_Data/Books.xml";
        XmlDocument doc = new XmlDocument();
        doc.Load(xmlPath);
        //Get all job titles in the XML file
        XmlNodeList titleList = doc.GetElementsByTagName("title");
        Response.Write("Titles: " + "<br>");
        foreach (XmlNode node in titleList)
        ...{
        Response.Write("Title : " + node.FirstChild.Value + "<br>");
        }
        //Get reference to the first author node in the XML file
        XmlNode authorNode = doc.GetElementsByTagName("author")[0];
        foreach (XmlNode child in authorNode.ChildNodes)
        ...{
        if ((child.Name == "first-name") &&
        (child.NodeType == XmlNodeType.Element))
        ...{
        Response.Write("First Name : " + child.FirstChild.Value + "<br>");
        }
        if ((child.Name == "last-name") &&
        (child.NodeType == XmlNodeType.Element))
        ...{
        Response.Write("Last Name : " + child.FirstChild.Value + "<br>");
        }
        }
    }
    #endregion

    例子二:显示xml全部节点#region 例子二:显示xml全部节点
    protected void GetAllNodes()
    ...{
        string xmlPath = Request.PhysicalApplicationPath + @"/App_Data/books.xml";
        XmlDocument booksDocument = new XmlDocument();
        booksDocument.Load(xmlPath);
        XmlNode xmlRootNode = booksDocument.DocumentElement;
        GetChildNodes(xmlRootNode);
    } 
    /**//// <summary>
    /// 函数加载XmlNode的所有子节点的内容
    /// </summary>
    /// <param name="node"></param>
    protected void GetChildNodes(XmlNode node)
    ...{
        if (node.NodeType == XmlNodeType.Text)
        ...{
            Response.Write("xmlType = "+node.NodeType.ToString()+" && xmlValue = "+ node.Value.ToString() + "</br>");
        }
        else
        ...{
            Response.Write("xmlType = " + node.NodeType.ToString() + " && xmlValue = " + node.Name.ToString() + "</br>");
        }

        if (node.Attributes != null)
        ...{
           XmlAttributeCollection xmlAttCollection = node.Attributes;
            foreach(XmlAttribute xmlAtt in xmlAttCollection)
            ...{
                Response.Write("xmlAttName = " + xmlAtt.Name.ToString() + " && xmlAttValue = " + xmlAtt.Value.ToString() + "</br>");
            }
        }
        XmlNodeList nodeList = node.ChildNodes;
        foreach (XmlNode chldNode in nodeList)
        ...{
            GetChildNodes(chldNode);
        }
    }
    #endregion

    例子一:提供两种加载XML文件的方法: 一:把.xml文件加载到XmlDocument; 二:把xml字符串加载到XmlDocument#region 例子一:提供两种加载XML文件的方法: 一:把.xml文件加载到XmlDocument; 二:把xml字符串加载到XmlDocument
    protected void TwoLoadXmlExample()
    ...{
        string xmlPath = Request.PhysicalApplicationPath + @"/App_Data/books.xml";
        string xmlPath2 = Request.PhysicalApplicationPath + @"/App_Data/employee.xml";
        XmlDocument bookDocument = new XmlDocument();
        XmlDocument employeeDocument = new XmlDocument();
        //Response.ContentType = "text/xml";
        try
        ...{
            bookDocument.PreserveWhitespace = true;
            bookDocument.Load(xmlPath);
            Response.Write(bookDocument.InnerXml);

            string strEmpXml = "<Employee><firstName>Deng</firstName><secondName>yangyan</secondName></Employee> ";
            employeeDocument.LoadXml(strEmpXml);
            employeeDocument.Save(xmlPath2);
        }
        catch (XmlException eee)
        ...{
            Response.Write(eee.ToString());
        }
        catch (Exception ee)
        ...{
            Response.Write("以下是发生错误的原因 ");
            Response.Write(ee.ToString());
        }
     
    }
    #endregion
}

http://blog.csdn.net/flyin2006/archive/2006/09/17/1227708.aspx