如何返回JsonResult [英] How to return JsonResult

问题描述

我在编写此AJAX方法时遇到麻烦.

I'm having trouble writing this AJAX method.

我想返回一个JsonResult. (似乎是合乎逻辑的事情.)我可以找到的所有示例都使用Json()将结果转换为JsonResult.

I want to return a JsonResult. (Seems like the logical thing to do.) All the examples I could find use Json() to convert the result to a JsonResult.

[HttpPost]
public JsonResult GetScoreResults(string userId, int chapterId)
{
    return new Json(ChapterScoreResultsModel.Create(DbContext, userId, chapterId));
}

但是当我尝试这样做时:

But when I try this:

找不到类型或名称空间名称"Json"(您是否缺少using指令或程序集引用?)

The type or namespace name 'Json' could not be found (are you missing a using directive or an assembly reference?)

但是，我在任何地方都找不到该符号，而且我发现所有使用该符号的文章似乎都没有什么特别之处.我确实在命名空间System.Web.Helpers中找到了该符号，但是当我为此添加using时，出现了错误:

However, I can't find this symbol anywhere and all the articles I found that used it didn't seem to do anything special. I did find the symbol in the namespace System.Web.Helpers but when I add a using for that, I get the error:

无法创建静态类'Json'的实例

Cannot create an instance of the static class 'Json'

从AJAX方法返回JsonResult的当前方法是什么?

What is the current way to return a JsonResult from an AJAX method?

推荐答案

Controller类具有

The Controller class has a Json method. Invoking it returns a JsonResult. Note that it's method, not a constructor. You do not put the new keyword in front of the method call.

return Json(ChapterScoreResultsModel.Create(DbContext, userId, chapterId));

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