如何ASP.NET MVC：我怎样才能绑定类型列表℃的财产; T＆GT ;? [英] How ASP.NET MVC: How can I bind a property of type List<T>?

问题描述

比方说我有波纹管模式

public class UserInformation
{
  public List<UserInRole> RolesForUser { get; set; }      
  //Other properties omitted...
}

public class UserInRole
{
  public string RoleName { get; set; }
  public bool InRole { get; set; }
}

在我的网页我有类似

<%using(Html.BeginForm()){%>
  .../...
  <%for(int i =0; i<Model.InRoles.Cout; i++%>
  <p><%: Html.CheckBox(Model.Roles[i].RoleName, Model.Roles[i].InRole)%></p>
<%}%>

我们的想法是能够检查/取消选中该复选框，这样，当窗体发布到动作时，动作通过添加/删除从每个角色的用户行为适当。

The idea is to be able to check/uncheck the checkbox so that when the form is posted to the action, the action acts appropriately by adding/removing the user from each role.

当形式被发送到该操作方法的问题是，在角色属性（它是一个列表UserInRole对象）不反映由用户进行的改变。 ModelBinder的正常运行上的所有其他属性，但角色属性

The problem is when form is posted to the action method, the Roles property (which is a list UserInRole object) doesn't reflect the change made by the user. ModelBinder works properly on the all other properties but 'Roles property'

我不知道如何能做到这一点。我怀疑给复选框的名称/ id是不恰当的。但是，我只是叠加。也许我应该做不同的看法。

I wonder how I can do that. I suspect that the name/id given to the checkbox is not appropriate. But, I'm just stack. Maybe I should do it differently.

感谢您的帮助。

推荐答案

您应该看到菲尔哈克对的模型绑定到一个列表。
从本质上讲，你需要的只是提交了一堆表单域了每个具有相同的名称。

You should see Phil Haack's post on model binding to a list. Essentially what you need to is simply submit a bunch of form fields each having the same name.

<%@ Page Inherits="ViewPage<UserInformation>" %>

<% for (int i = 0; i < 3; i++) { %>

  <%: Html.EditorFor(m => m.RolesForUser[i].RoleName) %>
  <%: Html.EditorFor(m => m.RolesForUser[i].InRole) %>

<% } %>

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