结合XML元素在MVC4模型

问题描述

我已经搜查，但找不到类似的事情，因为这可能是非常基本的。基本上，我试图从一个XML文件中读取的电影列表，然后将它传递回各​​类消费的模式。但我得到一个System.NullReferenceException：对象不设置到对象的实例。我（须藤）C＃code看起来像这样

  VAR xmlDoc中=新的XmlDocument（）;
        xmlDoc.Load（C：\\\\ movies.xml）;
        VAR movieModel =新MovieSummary（）;
        VAR MovieXML = xmlDoc.GetElementsByTagName（电影）;
        INT I;        对于（i = 0; I＆LT; MovieXML.Count;我++）
        {
            。movieModel.Movies [我]。名称= MovieXML [I] [名称]的toString（）;
        }
 

我的模型看起来像这样

 命名空间movies.Models
 {     公共类MovieSummary
     {
         公开名单＆LT;电影及GT;电影{搞定;组; }
     }     公共类电影
     {
         公共字符串电影{搞定;组; }
     }
 }
 

XML文件看起来像

 ＆LT;电影的xmlns =htt​​p://www.sitemaps.org/schemas/sitemap/0.9＆GT;
      ＆LT;电影和GT;
       ＆LT;名称＆gt;黑暗骑士＆LT; /名称＆gt;
  ＆LT; /电影和GT;
  ＆LT;电影和GT;
       ＆LT;名称＆gt;钢铁侠＆LT; /名称＆gt;
  ＆LT; /电影和GT;
 ＆LT; /电影和GT;
 

解决方案

我认为你是用最好的XmlSerializer 如果您的XML文件的结构是相似的类通过继承。

编写一个反序列化的XML，以便您的类的功能。

 公共静态MovieSummary反序列化（）
{
    XmlSerializer的序列化=新的XmlSerializer（typeof运算（MovieSummary））;
    的TextReader的TextReader;    的TextReader =新的StreamReader（pathtoyourxmlfile）;    MovieSummary总结=（MovieSummary）serializer.Deserialize（TextReader的）;
    textReader.Close（）;
    返回总结;
}
 

希望帮助

I've searched but couldn't find anything similar as this is probably very basic. I'm basically trying to read a list of movies from an xml file and then to pass it back into a Model for various types of consumption. But I get a "System.NullReferenceException: Object reference not set to an instance of an object." My (sudo) c# code looks something like this

        var xmlDoc = new XmlDocument();
        xmlDoc.Load("c:\\movies.xml");
        var movieModel = new MovieSummary();
        var MovieXML = xmlDoc.GetElementsByTagName("movie");
        int i;

        for (i = 0; i < MovieXML.Count; i++)
        {
            movieModel.Movies[i].name = MovieXML[i]["name"].toString();
        }

my Model looks like this

 namespace movies.Models
 {

     public class MovieSummary
     {
         public List<Movie> Movies { get; set; }
     }

     public class Movie
     {
         public string movie { get; set; }
     }
 }

xml file looks like

 <movies xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
      <movie>
       <name>The Dark Knight</name>
  </movie>
  <movie>
       <name>Iron Man</name>
  </movie>
 </movies>

解决方案

I think you are better off with using XmlSerializer if the structure of your xml file is resembled in your classes by inheritance.

Write a function which Deserialize your xml to your classes.

public static MovieSummary Deserialize()
{
    XmlSerializer serializer = new XmlSerializer(typeof(MovieSummary));
    TextReader textReader;

    textReader = new StreamReader(pathtoyourxmlfile);

    MovieSummary summary = (MovieSummary)serializer.Deserialize(textReader);
    textReader.Close();
    return summary;
}

Hope that helps

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