在MVC和Razor中访问嵌套的JSON元素

Question

我对MVC，JSON，Razor和.Net非常陌生 - 对我来说很容易。

我一直在努力通过CosmosDB demo from Microsoft没有问题。

然后我开始使用代码作为基础将嵌套的JSON元素检索到HTML表格中。我已经成功地为第一层嵌套元素做了这些工作，但一直在与第二层级挣扎。

这是一个示例JSON文档。

{ 
"title": "War Diary for 2nd Battalion Scots Guards September 1943", 
"date": "September 1943", 
"unit": "2nd Battalion Scots Guards", 
"brigade": "201 Guards Brigade", 
"division": "56 Infantry Division", 
"entries": [ 
{ 
    "day": "1st", 
    "location": "Tripoli", 
    "time": "", 
    "text": [ 
    { 
     "p": "The L.S.T. party march to the Race Course prior to embarkation...." 
    } 
    ] 
}, 
{ 
    "day": "2nd", 
    "location": "", 
    "time": "", 
    "text": [ 
    { 
     "p": "A two hours march brings the L.S.T. party to the quay..."} 
    ] 
}, 
{ 
    "day": "3rd", 
    "location": "", 
    "time": "", 
    "text": [ 
    { 
     "p": "The \"fighting four hundred\"; or the two L.C.I's parties march..." }, 
     "p": "The L.C.I. parties embark. Last minute-farewells. Convoy sails after dark..."} 
     ] 
    } 
} 
] 
} 

这是模型：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using Newtonsoft.Json; 

namespace todo.Models 
{ 
public class WarDiary 
    { 
     [JsonProperty(PropertyName = "id")] 
     public string Id { get; set; } 

     [JsonProperty(PropertyName = "title")] 
     public string Title { get; set; } 

     [JsonProperty(PropertyName = "date")] 
     public string Date { get; set; } 

     [JsonProperty(PropertyName = "unit")] 
     public string Unit { get; set; } 

     [JsonProperty(PropertyName = "brigade")] 
     public string Brigade { get; set; } 

     [JsonProperty(PropertyName = "division")] 
     public string Division { get; set; } 

     [JsonProperty(PropertyName = "entries")] 
     public Entry [] Entries { get; set; } 
    } 

    public class Entry 
    { 
     [JsonProperty(PropertyName = "text")] 
     public Details[] Text { get; set; } 

     [JsonProperty(PropertyName = "day")] 
     public string Day { get; set; } 

     [JsonProperty(PropertyName = "time")] 
     public string Time { get; set; } 

     [JsonProperty(PropertyName = "location")] 
     public string Location { get; set; } 
    } 

    public class Details 
    { 
     [JsonProperty(PropertyName = "p")] 
     public string P { get; set; } 
    } 

} 

的观点是：

@model todo.Models.WarDiary 

@{ 
ViewBag.Title = "Details"; 
Layout = "~/Views/Shared/_Layout.cshtml"; 
} 

<h2>Details</h2> 
<div> 
<h4>WarDiary</h4> 
<hr /> 

<table class="table"> 
    <tr> 
     <th> 
      Location 
     </th> 
     <th> 
      Day 
     </th> 
     <th> 
      Time 
     </th> 
     <th> 
      Summary 
     </th> 
    </tr> 
    @foreach (var entry in Model.Entries) 
    { 
     <tr> 
      <td> 
       @entry.Location 
      </td> 
      <td> 
       @entry.Day 
      </td> 
      <td> 
       @entry.Time 
      </td> 
      <td> 
       @foreach (var p in Model.Entries.Text) 
       { 
        <p> 
         @p.P 
        </p> 
       } 
      </td> 
     </tr> 
    } 
</table> 

我可以成功地检索的元素在条目（日期，时间，地点），但一旦我尝试访问详细信息（嵌套文本）我似乎无法引用它。

的问题是这一行：

@foreach (var p in Model.Entries.Text) 

为此，我得到的错误

“进入[]”不包含“文本”，并没有扩展方法“文本”的定义接受类型'Entry []'的第一个参数可以找到（你是否缺少使用指令或程序集引用？）。

我试过在Entry中嵌套类的细节，但似乎有同样的问题。我假设它与模型的定义有关。

任何建议感激地收到！

Answer 1

Model.Entries是Entry[]的类型。每个Entry有一个Text属性。但是，您正试图从阵列本身访问属性Text。您的代码应该是：

@foreach (var entry in Model.Entries) 
{ 
    <tr> 
     <td> 
      @entry.Location 
     </td> 
     <td> 
      @entry.Day 
     </td> 
     <td> 
      @entry.Time 
     </td> 
     <td> 
      @foreach (var p in entry.Text) 
      { 
       <p> 
        @p.P 
       </p> 
      } 
     </td> 
    </tr> 
}