Question

我创建了以下自定义ActionResult，它返回多个部分视图。

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的构造函数中放置断点，我会发现两种情况下的模型都等于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。然后你会发现它们都有相同的模型。

Answer 1

您可以使用新拥有 ViewData / ViewData.Model 实例，按以下方式初始化 MultiplePartialViewsResult 对象（对我来说很好）：

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);
        }
    }
}

<强>控制器：

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 } } }
    );
}

<强>查看：

<强>索引：

@Html.Action("FakeAction")

ColumnSumView.cshtml / RowSumView.cshtml：

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

所有PartialViews的自定义ActionResult等效模型

1 个答案: