Asp mvc从SelectList中的id字段显示文本值

如何在SelectList中显示来自所选id（CountryId）的文本值（CountryName）？ SelectList包含在发送到Details视图模板的视图模型中。该字段当前正在显示CountryID。我想要CountryName。Asp mvc从SelectList中的id字段显示文本值

视图

<div class="display-field">@Model.Dinner.CountryID</div>

控制器

public ActionResult Details(int id) 
    { 
     Dinner dinner = dinnerRepository.GetDinner(id); 
     DinnerFormViewModel model = new DinnerFormViewModel(dinner); 
     if (dinner == null) 
      return View("NotFound");  
     else   
      return View("Details", model); 
    }

视图模型

public class DinnerFormViewModel 
{ 
    public Dinner Dinner { get; private set; } 
    public SelectList CountriesList { get; private set; } 

    public DinnerFormViewModel(Dinner dinner) 
    { 
     Dinner = dinner; 

     var items = new List<Country>() { 
       new Country() { 
        CountryID = 1, 
        CountryName = "England" 
       }, 
       new Country() { 
        CountryID = 2, 
        CountryName = "Ireland" 
       }, 
       new Country() { 
        CountryID = 3, 
        CountryName = "Scotland" 
       }, 
       new Country() { 
        CountryID = 3, 
        CountryName = "Wales" 
       } 
      }; 

     CountriesList = new SelectList(items, "CountryID", "CountryName", 2); 
    } 
}

同样，这仅仅是显示在一个标签中的国家或地区名称值。不想编辑它或任何东西。 LINQ表达式？

来源

2011-01-30 Jay

这个伟大的工程

<div class="display-label">Country</div> 
<div class="display-field">@Html.Encode(Model.CountriesList.SingleOrDefault(c => int.Parse(c.Value) == Model.Dinner.CountryID).Text)</div>

与感谢related岗位。

来源

2011-01-31 14:28:12 Jay

我会创建一个新类来帮助查找。在我的示例代码中，该类是“BusinessResources”。在该类中，我将为每个查找创建一个方法，如下面为国家描述的那样。一本字典对你想要完成的工作是完美的。

public static Dictionary<string, string> GetCountryList() 
     { 
      Dictionary<string, string> country = new Dictionary<string, string>(); 

      Capture2Entities db = new Capture2Entities(); 
      country = db.CountryLists.Where(x => x.IsDisabled == false) 
           .OrderBy(x => x.CountryName) 
           .Select(x => new { x.ID_Country, x.CountryName }) 
           .ToDictionary(key => key.ID_Country.ToString(), val => val.CountryName); 
      return country; 
     }

观是这样的

<div class="display-label">@Html.LabelFor(model => model.ID_Country)</div> 
<div class="display-field">@Html.DropDownListFor(model => model.ID_Country, new SelectList(BusinessResources.GetCountryList(),"Key","Value"))</div>

来源

2013-07-31 19:10:41 Harbinger

Asp mvc从SelectList中的id字段显示文本值

回答

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