asp.net-mvc – 在ASP.NET MVC中的JSON属性中返回呈现的HTML部分

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();
}

然后,您可以使用它来执行RJS样式的json结果

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",}
    };

    return Json(jsonResult,JsonRequestBehavior.AllowGet);
}

而partial有一个强类型的视图模型

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