asp.net - 所有局部 View 的自定义 ActionResult 等效模型

Question

我创建了以下自定义 ActionResult它返回多个局部 View 。

public class MultiplePartialViewsResult : ActionResult
{
    private const string Separator = "-";
    private PartialViewResult[] _partialViews;

    public MultiplePartialViewsResult(params PartialViewResult[] partialViews)
    {
        _partialViews = partialViews;
    }

    public override void ExecuteResult(ControllerContext context)
    {
        foreach (var partialView in _partialViews)
        {
            partialView.ExecuteResult(context);
            context.HttpContext.Response.Output.Write(Separator);
        }
    }
}

然后我按如下方式使用它:

return new MultiplePartialViewsResult(
             PartialView("~/Views/RowSumView.cshtml", new List<double>() { 1.0 }),
             PartialView("~/Views/ColumnSumView.cshtml", new List<double>() { 2.0 }));

但是如果我在 MultiplePartialViewsResult 中放置断点的构造函数我看到模型在两种情况下都等于 2.0 .它使用数组中指定的最后一个模型覆盖所有模型。
尝试在方法中创建几个 PartialViews 并将其分配给变量。然后您会注意到它们都共享等效模型。

Answer 1

您可以初始化 MultiplePartialViewsResult 以以下方式使用 对象全新 查看数据 / ViewData.Model 实例(对我来说很好用):

return new MultiplePartialViewsResult(
    //PartialView("~/Views/RowSumView.cshtml", new List<double>() { 1.0 }),
    //PartialView("~/Views/ColumnSumView.cshtml", new List<double>() { 2.0 })
    new PartialViewResult() { ViewName = "~/Views/RowSumView.cshtml", ViewData = new ViewDataDictionary() { Model = new List<double>() { 1.0 } } },
    new PartialViewResult() { ViewName = "~/Views/ColumnSumView.cshtml", ViewData = new ViewDataDictionary() { Model = new List<double>() { 2.0 } } }
);

自定义操作结果:

public class MultiplePartialViewsResult : ActionResult {
    private const string Separator = "-";
    private PartialViewResult[] _partialViews;

    public MultiplePartialViewsResult(params PartialViewResult[] partialViews) {
        _partialViews = partialViews;
    }

    public override void ExecuteResult(ControllerContext context) {
        foreach(var partialView in _partialViews) {
            partialView.ExecuteResult(context);
            context.HttpContext.Response.Output.Write(Separator);
        }
    }
}

Controller :

public ActionResult Index() {
    return View();
}
public ActionResult FakeAction() {
    return new MultiplePartialViewsResult(
        //PartialView("~/Views/RowSumView.cshtml", new List<double>() { 1.0 }),
        //PartialView("~/Views/ColumnSumView.cshtml", new List<double>() { 2.0 })
        new PartialViewResult() { ViewName = "~/Views/RowSumView.cshtml", ViewData = new ViewDataDictionary() { Model = new List<double>() { 1.0 } } },
        new PartialViewResult() { ViewName = "~/Views/ColumnSumView.cshtml", ViewData = new ViewDataDictionary() { Model = new List<double>() { 2.0 } } }
    );
}

浏览次数:

索引:

@Html.Action("FakeAction")

ColumnSumView.cshtml/RowSumView.cshtml:

@model List<double>
<ul>
    @foreach(double item in Model) {
        <li>@item</li>
    }
</ul>