Asp.net mvc 如何在布局页面中返回viewmodel？

My

\u Layout.cshtml

包含

 Html.Action("GetCartList", "Shared");
 ShoppingCartViewModel scvm = (ShoppingCartViewModel)ViewData["ShoppingCartViewModel"];

我的控制器

[ChildActionOnly]
public ShoppingCartViewModel GetCartList()
{
    var results = new ShoppingCartViewModel
    {
               Message = "",
               SomeOtherProperty = "Other"
    };

    ViewData["ShoppingCartViewModel"] = results;
    return  results;
}

问题是为什么

scvm

总是空的？ 当控制器“被击中”时，这些值将成功加载到

ViewData[“ShoppingCartViewModel”]

我希望我能做点像

ShoppingCartViewModel scvm = Html.Action("GetCartList", "Shared");

---

在子操作中，将ViewData设置为您的

ParentActionViewContext

[ChildActionOnly]
public void GetCartList()
{
    var results = new ShoppingCartViewModel
    {
       Message = "",
       SomeOtherProperty = "Other"
    };
    ControllerContext.ParentActionViewContext.ViewData["ShoppingCartViewModel"]=results;  
}

在你的布局中

@Html.Action("GetCartList", "Home");
@{

    var scvm = (ShoppingCartViewModel) ViewContext.ViewData["ShoppingCartViewModel"];
    <div> @scvm.SomeOtherProperty </div>
}

@Html.Action（“GetCartList”、“Home”）；
@{
var scvm=（ShoppingCartViewModel）ViewContext.ViewData[“ShoppingCartViewModel”]；
@scvm.SomeOtherProperty
}

六星选项在哪里？很好！