在视图中使用foreach循环对ASP.NET中控制器中的字段进行迭代

本文关键字：控制器 字段 迭代 NET 视图 foreach 循环 ASP | 更新日期: 2024-09-21 17:40:57

我正在尝试迭代存储在ASP.NET MVC4项目中控制器字段中的IList。我试图在我的一个视图中做到这一点，以便能够生成与通过搜索查询收集的一些信息相对应的HTML元素。代码如下所示。

控制器

public class HomeController : Controller
{
    public static int MovieHits;
    public static int PeopleHits;
    public static IList<Model.MovieDto> Movies;
    public static IList<Model.PersonDto> People;
public ActionResult SearchResults(string input)
    {
        ViewBag.Title = "Search";
        ViewBag.Message = "Your search returned the following match(es).";
        var results = Model.ModelController.UniversalSearch(input);
        Movies = results.MovieListForUser;
        People = results.PersonListForUser;
        MovieHits = Movies.Count;
        PeopleHits = People.Count;
        return View();
    }

视图

        <div id="movieResults">
            @foreach (var movie in HomeController.Movies)
            {
                <span class="movieResult">@movie.Title</span><br/>
            }
        </div>

问题是，当浏览器试图生成HTML时，我在浏览器中遇到了编译错误。错误消息可以在下面看到，但要发出警告；谷歌已经把它从丹麦语翻译成了英语，但从外观上看，它看起来基本上可以理解

错误

描述：编译处理此请求所需的资源时出错。阅读以下有关错误的详细信息，并对源代码进行必要的更改。kompillingsfunktion:CS0012:在未引用的程序集中定义了类型"Model.MovieDto"。添加对程序集"Model，Version=0.0.0.0，Culture=neutral，PublicKeyToken=null"的引用。来源错误：

Line 20: <td> 
Line 21: <div id="movieResults">
Line 22: @ foreach (var movie inHomeController.Movies)
Line 23: { 
Line 24: <span class="movieResult"> @ movie.Title < / span> <br/>

详细输出：

    C: ' Program Files (x86) ' IIS Express> "C: ' Windows ' Microsoft.NET ' Framework ' v4.0.30319 ' csc.exe" / t: library / utf8output / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 2296c65a ' 68000ed7_61f2ce01 ' WebGrease.dll "/ R:" C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 27f75d7a ' 0852d4d4_61f2ce01 ' EntityFramework.dll "/ R:" C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 5496f055 ' 42f708d7_61f2ce01 ' Antlr3.Runtime.dll " / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 0ee8ac00 ' fe53add5_61f2ce01 ' System.Web.Http.dll" / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' App_global.asax.of7azw0j.dll" / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 998cd3c3 ' f48cb7d5_61f2ce01 ' System.Web.Http.OData.dll" / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' c455315f ' d0673bd4_61f2ce01 ' DotNetOpenAuth.Core.dll" / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET / R: "C: ' Windows ' Microsoft.NET ' Framework ' v4.0.30319 ' Mscorlib.dll" / R: "C: ' Windows ' Microsoft.Net ' assembly ' GAC_MSIL ' System ' v4.0_4.0.0.0__b77a5c561934e089 ' System.dll" / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP . NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 07cc8738 ' 3289a6d4_61f2ce01 ' DotNetOpenAuth.OpenId.dll "/ R:" C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 33bc8f69 ' 9b5d66bd_4df8ce01 ' nunit.framework.dll "/ R:" C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 93c58068 ' 93b2a5d5_61f2ce01 ' System.Net.Http.Formatting.dll " / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 2f2e565f ' 5ed196d6_61f2ce01 ' Newtonsoft.Json.dll" / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 3ca568a6 ' 56e0bed5_61f2ce01 ' System.Web.Http.WebHost.dll" / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 2d57ee1b ' 804ef2d5_61f2ce01 ' Microsoft.Data.Edm.dll" / R: "C : ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 6d3f6044 ' 23229fd5_61f2ce01 ' System.Web.Optimization.dll" / R: "C : ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 895f125b ' 5996f043_56f8ce01 ' Webclient.dll " / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' ebbe30cd ' 47e537d6_61f2ce01 ' Microsoft.Data.OData.dll" / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 51baa225 ' 4f2d9ad4_61f2ce01 ' DotNetOpenAuth.OAuth.dll" / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' cd36e272 ' f779c0d6_61f2ce01 ' System.Spatial.dll" / R: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 96b97b00 ' 3ebd2ed4_61f2ce01 ' DotNetOpenAuth.AspNet.dll " / Out: "C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' App_Web_searchresults.cshtml.a8d08dba.6gvjhlym.dll" / D: DEBUG / debug + / optimize-/ w : 4 / nowarn: 1659; 1699, 1701, 612, 618 / warnaserror-"C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' App_Web_searchresults.cshtml.a8d08dba.6gvjhlym .0. cs "" C: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' App_Web_searchresults.cshtml.a8d08dba.6gvjhlym.1.cs " 

Microsoft (R) Visual C # 2010 Compiler version 4.0.30319.17929 
for Microsoft (R). NET Framework 4.5 
Copyright (C) Microsoft Corporation. All rights reserved. 
c: ' Users ' Emil ' Documents ' ITU ' 3 Semester ' BDSA Examn Project 2013 ' bdsa-project-2013 ' Program ' SSMDB ' WebClient ' Views ' Home ' SearchResults.cshtml (22,18): error CS0012: The type 'Model.MovieDto' is defined in the assembly that is not referenced to. Add a reference to the assembly 'Model, Version = 0.0.0.0, Culture = neutral, PublicKeyToken = null'. 
c: ' Users ' Emil ' AppData ' Local ' Temp ' Temporary ASP.NET Files ' root ' 8eddbb6c ' 32280fad ' assembly ' dl3 ' 895f125b ' 5996f043_56f8ce01 ' Webclient.dll: (Location of symbol related to previous error) 
c: ' Users ' Emil ' Documents ' ITU ' 3 Semester ' BDSA Examn Project 2013 ' bdsa-project-2013 ' Program ' SSMDB ' WebClient ' Views ' Home ' SearchResults.cshtml (24,54): error CS1061: 'Model.MovieDto' does not contain a definition for 'Title', and there was not found an extension method 'Title' accepting a first argument of type 'Model.MovieDto' (are you missing a "using' directive or an assemblyreference?)

我尝试重新添加对Model类的引用（它位于解决方案中，但在另一个项目中。我对Razor和ASP.NET都是新手，所以我在这里有点迷路了。我认为这可能是我的Web.config文件中的错误或ASP.NET临时文件中的一个错误，但试图通过这两个大小来解决问题是徒劳的ong。不过，请提前谢谢。

在视图中使用foreach循环对ASP.NET中控制器中的字段进行迭代

若要修复错误，请尝试将程序集所在的dto类添加到web.config中的编译程序集（请参阅修复错误CS0012）。但是

使用静态控制器字段将数据从控制器传递到视图不是一个好主意。您将如何处理多个同时请求？因此，使用ViewBag或创建适当的模型并将其传递给视图：

public class SearchResultModel
{
    public IList<Model.MovieDto> Movies { get; set; }
    public IList<Model.PersonDto> People { get; set; }
}

创建并传递

public ActionResult SearchResults(string input)
{
    ViewBag.Title = "Search";
    ViewBag.Message = "Your search returned the following match(es).";
    var results = Model.ModelController.UniversalSearch(input);
    var model = new SearchResultModel {
       Movies = results.MovieListForUser,
       People = results.PersonListForUser
    };
    return View(model);
}

视图：

@model Your.Namespace.SearchResultModel
...    
<td> 
<div id="movieResults">
@foreach (var movie Model.Movies) { 
    <span class="movieResult"> @movie.Title </span><br/>
}
<span>Total movie hits: @Model.Movies.Count</span>
...

每个web请求都将导致单独的模型创建。

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