返回一个HTML呈现在JSON属性在ASP.NET MVC部分 [英] Returning a rendered HTML partial in a JSON Property in ASP.NET MVC

问题描述

我一直快乐地返回在ASP.NET从我的控制器JsonResult对象或部分ASP.NET意见。

I've been happily returning JsonResult objects or partial ASP.NET views from my controllers in ASP.NET.

我想返回呈现局部视图作为一个JSON对象的属性。例如。

I would like to return a rendered partial view as a property in a JSON object. e.g.

请求

/post/detail/1

将返回

{"PostId": 1, "Html": "<p>some markup rendered from a partial to inject</p>" }

这将让我知道，当我处理JavaScript中的回应帖子ID。的最佳方式任何提示，做到这一点？

This would allow me to know the PostId when I am handling the response in JavaScript. Any tips on the best way to do this?

推荐答案

下面是一些code，因为我需要这个今天做，将工作。 原来的code为这里描述。

Here is some code that will work cause I needed to do this today. The original code is described here.

public static string RenderPartialToString(string controlName, object viewData)
{
    var viewContext = new ViewContext();
    var urlHelper = new UrlHelper(viewContext.RequestContext);
    var viewDataDictionary = new ViewDataDictionary(viewData);

    var viewPage = new ViewPage
    {
        ViewData = viewDataDictionary,
        ViewContext = viewContext,
        Url = urlHelper
    };

    var control = viewPage.LoadControl(controlName);
    viewPage.Controls.Add(control);

    var sb = new StringBuilder();
    using (var sw = new StringWriter(sb))
    using (var tw = new HtmlTextWriter(sw))
    {
            viewPage.RenderControl(tw);
    }

    return sb.ToString();
}

您就可以用它来做RJS风格JSON结果

You can then use it to do RJS style json results

public virtual ActionResult Index()
{
    var jsonResult = new JsonResult
    {
        Data = new
        {
            main_content = RenderPartialToString("~/Views/contact/MyPartial.ascx", new SomeObject()),
            secondary_content = RenderPartialToString("~/Views/contact/MyPartial.ascx", new SomeObject()),
        }
    };

    return Json(jsonResult, JsonRequestBehavior.AllowGet);
}

和部分有一个强类型的视图模型

And the partial has a strongly typed view model

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<SomeObject>" %>
<h1>My Partial</h1>

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