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我想呈现从服务器端事件(无请求)的部分视图。假的HttpContext? (ASP.NET MVC)
我发现了下面的代码,它能够在没有控制器的情况下渲染部分视图。 Render MVC PartialView into SignalR response
public static string RenderPartialView(string controllerName, string partialView, object model)
{
var context = new HttpContextWrapper(System.Web.HttpContext.Current) as HttpContextBase;
var routes = new System.Web.Routing.RouteData();
routes.Values.Add("controller", controllerName);
var requestContext = new RequestContext(context, routes);
string requiredString = requestContext.RouteData.GetRequiredString("controller");
var controllerFactory = ControllerBuilder.Current.GetControllerFactory();
var controller = controllerFactory.CreateController(requestContext, requiredString) as ControllerBase;
controller.ControllerContext = new ControllerContext(context, routes, controller);
var ViewData = new ViewDataDictionary();
var TempData = new TempDataDictionary();
ViewData.Model = model;
using (var sw = new StringWriter())
{
var viewResult = ViewEngines.Engines.FindPartialView(controller.ControllerContext, partialView);
var viewContext = new ViewContext(controller.ControllerContext, viewResult.View, ViewData, TempData, sw);
viewResult.View.Render(viewContext, sw);
return sw.GetStringBuilder().ToString();
}
}
的客户端请求(SignalR/WebSocket的)后使用时,也能正常工作,但如果代码是由一个服务器端事件(WCF连接到其他应用),HttpContext.Current = NULL触发这导致错误。
我该如何做这项工作?
PS。我也尝试过Razor引擎,但是我收到错误“无法编译模板,名称'Html'在当前上下文中不存在”。由于该模板还包含“@Html”,因此剃刀引擎似乎无法在控制器外部解析模板。