Question

我正在将现有的WebForms应用程序转换为MVC5。有数据存储在 / App_Data 文件夹中的XML文件中。我创建了一个包含所有匹配项的模型。我需要从此XML文件中获取数据，然后将其作为 IQueryable 返回。

最有效/最佳实践方法是什么？任何简单的例子都会很棒。

澄清我知道从XML获取数据的各种方法。问题更多地是关于将数据导入IQueryable。

这是我的模特：

这是我的XML文档：

using System;
using System.ComponentModel.DataAnnotations;

namespace Framework.Models
{
    public class NewsModel
    {
        public NewsModel()
        {
            Title = string.Empty;
            Summary = string.Empty;
            Image = string.Empty;
            ImageWidth = 0;
            ImageHeight = 0;
            ImageSrcSet = string.Empty;
            ImageSizes = string.Empty;
            Url = new Uri("#");
            UrlText = string.Empty;
            UrlTarget = "_self";
            Date = DateTime.Now;
        }

        [Display(Name = "Title")]
        public String Title { get; set; }

        [Display(Name = "Summary")]
        public String Summary { get; set; }

        [Display(Name = "Image")]
        public String Image { get; set; }

        [Display(Name = "ImageWidth")]
        public int ImageWidth { get; set; }

        [Display(Name = "ImageHeight")]
        public int ImageHeight { get; set; }

        [Display(Name = "ImageSrcSet")]
        public String ImageSrcSet { get; set; }

        [Display(Name = "ImageSizes")]
        public String ImageSizes { get; set; }

        [Display(Name = "Url")]
        public Uri Url { get; set; }

        [Display(Name = "UrlText")]
        public String UrlText { get; set; }

        [Display(Name = "UrlTarget")]
        public String UrlTarget { get; set; }

        [Display(Name = "Date")]
        public DateTime Date { get; set; }

    }
}

Answer 1

这将帮助您入门

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Xml;
using System.Xml.Serialization;

namespace ConsoleApplication43
{
    class Program
    {
        const string FILENAME = @"c:\temp\test.xml";
        static void Main(string[] args)
        {
            XmlSerializer xs = new XmlSerializer(typeof(Framework.Models.News));
            XmlTextReader reader = new XmlTextReader(FILENAME);
            Framework.Models.News news = (Framework.Models.News)xs.Deserialize(reader);
        }

    }

}
namespace Framework.Models
{

    [XmlRoot("News")]
    public class News
    {
        [XmlElement("Item")]
        public List<NewsModel> newsModel { get; set; } 
    }
    [XmlRoot("Item")]
    public class NewsModel
    {
        public NewsModel()
        {
            Title = string.Empty;
            Summary = string.Empty;
            Image = string.Empty;
            ImageWidth = 0;
            ImageHeight = 0;
            ImageSrcSet = string.Empty;
            ImageSizes = string.Empty;
            Url = "#";
            UrlText = string.Empty;
            UrlTarget = "_self";
            //Date = DateTime.Now;
        }

        [XmlElement("Title")]
        public String Title { get; set; }

        [XmlElement("Summary")]
        public String Summary { get; set; }

        [XmlElement("Image")]
        public String Image { get; set; }

        [XmlElement("ImageWidth")]
        public int ImageWidth { get; set; }

        [XmlElement("ImageHeight")]
        public int ImageHeight { get; set; }

        [XmlElement("ImageSrcSet")]
        public String ImageSrcSet { get; set; }

        [XmlElement("ImageSizes")]
        public String ImageSizes { get; set; }

        [XmlElement("Url")]
        public string Url { get; set; }

        [XmlElement("UrlText")]
        public String UrlText { get; set; }

        [XmlElement("UrlTarget")]
        public String UrlTarget { get; set; }

        [XmlElement("Date")]
        public string Date { get; set; }

    }
}

Answer 2

如果你有代码来创建你的对象，你可以把它变成IQueryable，如下所示：

NewsModel newsModel = CreateNewsModel();
var query = new [] { newsModel }.AsQueryable();

从App_Data中的文件获取XML数据并将其转换为IQueryable <mymodel>的最有效方法？

2 个答案: