Question

我的模型看起来像：

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


}

学校的样子：

public class school 
{

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

}

我按如下方式初始化schoolModel：

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);

我就像

一样使用它们

@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" })

但是在编辑帖子中，FormCollection对CategoryId没有任何价值，而且IncludeAttached

我尝试使用

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

}

以上提出null异常，任何想法如何解决？编辑周围的表格看起来像

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

Answer 1

而不是使用FormCollection为什么不使用.Net Model binding功能？

使用[HttpPost]，因为您是从表单发布的。

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

}

此外，c＃约定是对类名和变量使用Pascal Casing。

Html.DropDownListFor＆amp; Html.CheckBoxFor没有反映在系统上

1 个答案: