c# - 使用 Html.RenderAction 将模型从 View 传递到 Controller 会导致模型为空

Question

我有以下模型:

public class Foo
{
    public List<Employee> Employees{ get; set; }
    public List<Company> Companies{ get; set; }
    public List<Admin> Admins{ get; set; }
}

然后我有我的 Controller Action :

public ActionResult Index()
{
    Foo model = GetFooFromSomewhere();
    return PartialView("Index", model);
} 

public ActionResult Employees(List<Employee> model)
{
    return PartialView("Employees", model);
}

public ActionResult Companies(List<Company> model)
{
    return PartialView("Companies", model);
}

public ActionResult Admins(List<Admin> model)
{
    return PartialView("Admins", model);
}

那我有我的看法

索引.cshml:

@model Foo
@if(Model.Employees.Count > 0)
{
    @{Html.RenderAction("Employees", "Config", Model.Employees);}
}
@if(Model.Companies.Count > 0)
{
    @{Html.RenderAction("Companies", "Config", Model.Companies);}
}
@if(Model.Admins.Count > 0)
{
    @{Html.RenderAction("Admins", "Config", Model.Admins);}
}

员工.cshtml:

@model List<Employee>

//Display model here

公司.cshtml

@model List<Company>

//Display model here

Admins.cshtml

@model List<Admin>

//Display model here

如您所见，我使用 Index.cshtml 获取包含多个列表的对象。这是因为如果在列表中找不到任何项目，我需要隐藏操作。但是，当我再次使用@Html.RenderAction(...) 将它们传递给 Controller ​​时，当我期待一个列表时，我在 Controller 操作中得到了空值。为什么？

Answer 1

这样试试: Controller :

public ActionResult Admins(List<Admin> m)
{
    return PartialView("Admins", m);
}

查看:

@{Html.RenderAction("Admins", "Config", new { m = Model.Admins });}