c# mvc如何获取xml文件

超、凢脫俗 2021-12-21 06:33 265阅读 0赞

xml文件格式如下:  
文档主要是用来记录中国的传统节日  
  
\[html\] view plaincopy  
<?xml version="1.0" encoding="utf-8"?>  
<China>  
<Festival>  
<title>清明</title>  
<date>4-5</date>  
<contents>中国人纪念先人的日子</contents>  
</Festival>  
</China>  
  
MVC中Controllers中的XMltestController.cs的代码  
//linq to xml单条信息显示  
var xDoc = XDocument.Load(Server.MapPath("/Content/jieri.xml"));  
var xmlData = from item in xDoc.Descendants("Festival") where item.Element("title").Value == "重阳" select new\{title=item.Element("title").Value,date=item.Element("date").Value,contents=item.Element("contents").Value\};  
jieris je = new jieris();  
ViewData\["count"\] = xmlData.Count();  
  
//必须采用这种循环的结构，否则没有法子显示出来．  
foreach (var item in xmlData)  
\{  
je.title = item.title;  
je.date = item.date;  
je.contents = item.contents;  
\}  
return View(je);  
\}  
  
/// <summary>  
/// linq to xml列表功能  
/// </summary>  
/// <returns></returns>  
public ActionResult List()  
\{  
var xdoc = XElement.Load(Server.MapPath("/Content/jieri.xml"));  
  
　　　　//这里的new jieris是定义了一个model类，在后面会把代码放上来，就是三个字段  
var list = from items in xdoc.Descendants("Festival") select new jieris \{ title = items.Element("title").Value, date = items.Element("date").Value, contents = items.Element("contents").Value \};  
return View(list);  
\}  
  
/// <summary>  
/// linq to xml添加功能  
/// </summary>  
/// <returns></returns>  
public ActionResult add()  
\{  
var xdoc = XElement.Load(Server.MapPath("/Content/jieri.xml"));  
//添加  
XElement xe = new XElement("Festival",  
new XElement("title", "腊八"),  
new XElement("date", "12-8"),  
new XElement("contents", "农历十二月初八（农历十二月被称为腊月），是我国汉族传统的腊八节，这天我国大多数地区都有吃腊八粥的习俗。"));  
xdoc.Add(xe);  
xdoc.Save(Server.MapPath("/Content/jieri.xml"));  
return RedirectToAction("List");  
\}  
  
/// <summary>  
/// linq to xml修改功能  
/// </summary>  
/// <returns></returns>  
public ActionResult edit(string id)  
\{  
var xDoc = XElement.Load(Server.MapPath("/Content/jieri.xml"));  
  
var updateInfo = from item in xDoc.Descendants("Festival") where item.Element("date").Value == id select item;  
  
foreach (var i in updateInfo)  
\{  
i.Element("title").Value = i.Element("title").Value + "1";  
\}  
  
xDoc.Save(Server.MapPath("/Content/jieri.xml"));  
  
return RedirectToAction("List");  
\}  
  
/// <summary>  
/// linq to xml删除功能  
/// </summary>  
/// <param name="id"></param>  
/// <returns></returns>  
public ActionResult Delete(string id)  
\{  
var xDoc = XElement.Load(Server.MapPath("/Content/jieri.xml"));  
var deleteinfo = from item in xDoc.Descendants("Festival") where item.Element("date").Value == id select item;  
  
deleteinfo.Remove();  
  
xDoc.Save(Server.MapPath("/Content/jieri.xml"));  
  
return RedirectToAction("List");  
\}  
  
这里的修改就是很简单的把名字改了一下，没做任何处理，也没有做判断．  
  
　这里要说明的一点是，有时候用  
var xDoc = XDocument.Load(Server.MapPath("/Content/jieri.xml"));  
这种来初始化一个xml，其实这种初始化也是可行的，但是有一点要注意的是，对于列表页面和详细信息页面这个没有问题，可是对于，添加，修改，删除就会出现问题  
  
前台代码  
<%@ Page Language="C\#" Inherits="System.Web.Mvc.ViewPage<IEnumerable<En\_MVC\_test.Models.jieris>>" %>  
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "[http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd][http_www.w3.org_TR_xhtml1_DTD_xhtml1-transitional.dtd]">  
<html xmlns="[http://www.w3.org/1999/xhtml][http_www.w3.org_1999_xhtml]" >  
<head runat="server">  
<title>List</title>  
</head>  
<body>  
<table>  
<tr>  
<th></th>  
<th>  
title  
</th>  
<th>  
date  
</th>  
<th>  
contents  
</th>  
</tr>  
  
<% foreach (var item in Model) \{ %>  
  
<tr>  
<td>  
<%= Html.ActionLink("修改", "edit", new \{ id=item.date \})%> |  
<%= Html.ActionLink("删除", "Delete", new \{ id=item.date \})%>  
</td>  
<td>  
<%= Html.Encode(item.title) %>  
</td>  
<td>  
<%= Html.Encode(item.date) %>  
</td>  
<td>  
<%= Html.Encode(item.contents) %>  
</td>  
</tr>  
  
<% \} %>  
  
</table>  
  
<p>  
<%= Html.ActionLink("Create New", "add") %>  
</p>  
  
</body>  
</html>  
  
model类jieris.cs  
using System;  
using System.Collections.Generic;  
using System.Linq;  
using System.Web;  
namespace En\_MVC\_test.Models  
\{  
public class jieris  
\{  
public string title \{ get; set; \}  
  
public string date \{ get; set; \}  
  
public string contents \{ get; set; \}  
\}  
\}

示例2

已知有一个XML文件（bookstore.xml）如下：
    <?xml version="1.0" encoding="gb2312"?>
    <bookstore>
    <book genre="fantasy" ISBN="2-3631-4">
        <title>Oberon's Legacy</title>
        <author>Corets, Eva</author>
        <price>5.95</price>
    </book>
    </bookstore>
    
    显示所有数据。
        XmlNode xn=xmlDoc.SelectSingleNode("bookstore");
        XmlNodeList xnl=xn.ChildNodes;
    
        foreach(XmlNode xnf in xnl)
        {
       
         XmlElement xe=(XmlElement)xnf;
         Console.WriteLine(xe.GetAttribute("genre"));//显示属性值
         Console.WriteLine(xe.GetAttribute("ISBN"));
    
         XmlNodeList xnf1=xe.ChildNodes;
         foreach(XmlNode xn2 in xnf1)
         {
       
          Console.WriteLine(xn2.InnerText);//显示子节点点文本
         }
        }

转载于:https://www.cnblogs.com/BlessingIsMy/p/5506451.html

[http_www.w3.org_TR_xhtml1_DTD_xhtml1-transitional.dtd]: http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd
[http_www.w3.org_1999_xhtml]: http://www.w3.org/1999/xhtml