Html.DropDownListFor＆Html.CheckBoxFor對系統

Question

並不反映我有一個模型，看起來像：

public class schoolModel 
{ 
    public SelectList Categories; 
    public school Entity; 


} 

哪裏上學的樣子：

public class school 
{ 

int? CategoryId{get;set;} // foreingKey 
bool IncludeAttached{get;set;} 

} 

我初始化schoolModel如下：

var model = new schoolModel(); 
      model.Entity = schoolServiceAgent.Output.Entities.FirstOrDefault(n => n.Id == id); 
      model.Categories = new SelectList(new GenderServiceAgent().GetCategoriesByAlias(null, true), "Id", "Alias", model.Entity.CategoryId); 

我用他們喜歡

@Html.DropDownListFor(model => model.Entity.CategoryId, new SelectList(Model.Categories, "Value", "Text"), Model.Entity.CategoryId) 
@Html.CheckBoxFor(model => model.Entity.IncludeAttached.Value, new { @class = "form-control placeholder-no-fix", name = "IncludeAttached", @checked = "checked" }) 

，但在編輯崗位的FormCollection沒有價值的CategoryId，並IncludeAttached

我試圖讓他們使用

public ActionResult Edit(int id, FormCollection collection) 
{ 
    var categoryid = int.Parse(collection["CategoryId"]); 
    var result = selectedschool.inMediaArabicApp = bool.Parse(collection["IncludeAttached"]); 

} 

上述加薪空例外，任何想法如何解決呢？周圍的編輯形式看起來像

@using (@Html.BeginForm("Edit", "Schools", FormMethod.Post, 
          new { enctype = "multipart/form-data" })) 
{ 

Answer 1

而不是使用的FormCollection你爲什麼不使用.NET Model binding能力？

使用[HttpPost]，因爲您從表單發佈。

[HttpPost] 
public ActionResult Edit(School model) 
{ 
    var categoryid = model.CategoryId; 
    var result = model.IncludeAttached; 

} 

此外，c＃約定將使用Pascal Casing作爲類名和變量。