部分视图未显示，但其viewmodel在父级上有效

Question

In the cshtml code header I've instantiated a viewmodel with some data. I can bind to and display data from that viewmodel variable in the parent page. However, when I pass the viewmodel variable into a child partial view, nothing displays on the page.

@{
    Html.Partial("DailyReport", @DailyReportViewModel);
}

Any idea why the child partial view would not be displaying on the page or how to debug this issue?

Answer 1

Because you are calling the Partial method which return an MvcHtmlString , but you are not using the return value of the method.

You can do this instead

@Html.Partial("DailyReport", @DailyReportViewModel);

Razor will now render the return value from the DailyReport method.

Or you can use the RenderPartial method which render the result.

@{
   Html.RenderPartial("DailyReport", DailyReportViewModel);
}

Assuming DailyReportViewModel is an object of type T to which your partial view is strongly typed to.

Answer 2

将@放在最前面，然后从DailyReportViewModel删除@ ，它应该可以工作。

@Html.Partial("DailyReport", DailyReportViewModel);