我正在使用 RazorEngine如果我在 View 中指定布局，Parse 方法会抛出错误。如果我没有指定它，那么解析成功但布局不存在(如果在 _ViewStart.cshtml 中指定，它似乎会忽略布局)。请建议告诉我如何让 RazorEngine Parse 方法成功地处理布局？
我在下面包含了 C#、 View 和布局:
private String GetViewHtmlIncludingLayout(Controller controller, Object model, String view)
{
// this returns the view as string, including its razor markup
string template = ControllerBaseExtensions.GetViewTemplate(controller, view);
// this converts the razor markup view to html
string result = Razor.Parse(template, model);
return result;
}
查看
@using Carnotaurus.GhostPubsMvc.Web.Models
@model AboutModel
@{
Layout = "~/Views/Shared/_Layout.cshtml";
ViewBag.Title = "About us";
}
<!-- Subhead
================================================== -->
<header class="jumbotron subhead">
<div class="container">
<div>
<h1>@Model.JumboTitle</h1>
<p class="lead">
About ghost pubs.com
</p>
</div>
</div>
</header>
<div class="container">
<!-- Docs nav
================================================== -->
<div class="row">
<div class="span4">
<div>
<div>
<img class="img-circle face-relative" src="~/Content/bootstrap/2.3.1/img/ghostpubs/padded-logo-125x125.png" alt="Ghost Pubs" title="Ghost Pubs" />
</div>
</div>
</div>
<div class="span8">
<!-- Well
================================================== -->
<section id="well">
<div class="page-header">
<h1>All about Ghost Pubs dot Com</h1>
</div>
<h2>Let's tell you who we are</h2>
<div class="well well-large">
<p>
We are chaps involved in running <a href="http://www.myPubGuide.com">myPUBGUIDE.com</a>.
We have noticed that almost sixty public houses close each month. Therefore, given
the success of myPUBGUIDE, we thought it would be a good idea to launch a similar
website for drinking establishments that are haunted, closed, abandoned, and demolished.
</p>
<p>
Clearly such establishments do not belong on an active pub search. These deserve
a special website of their own, where your contribution would be encouraged. We
intend to launch this website in early 2014. We are sure that you have a ghost story
to share with us about your old local.
</p>
<p>
As the name suggests Ghost Pubs we are looking for any information you can give
regarding any hauntings or paranormal phenomena regarding your local pub.
</p>
</div>
<hr>
</section>
</div>
</div>
</div>
布局
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link href="~/favicon.ico" rel="shortcut icon" type="image/x-icon" />
<meta name="viewport" content="width=device-width" />
@Styles.Render("~/Content/css")
@Scripts.Render("~/bundles/modernizr")
<!-- styles -->
<link href="@Url.Content("~/content/bootstrap/2.3.1/css/bootstrap.css")" rel="stylesheet">
<link href="@Url.Content("~/content/bootstrap/2.3.1/css/bootstrap-responsive.css")" rel="stylesheet">
<link href="@Url.Content("~/content/bootstrap/2.3.1/css/docs.css")" rel="stylesheet">
<link href="@Url.Content("~/content/bootstrap/2.3.1/css/ghostpubs/docs2.css")" rel="stylesheet">
<link href="@Url.Content("~/content/bootstrap/2.3.1/css/prettify.css")" rel="stylesheet">
<link href="@Url.Content("~/content/bootstrap/2.3.1/font-awesome/css/font-awesome.css")" rel="stylesheet">
<link href="@Url.Content("~/content/bootstrap/2.3.1/css/bootswatch.css")" rel="stylesheet">
</head>
<body data-spy="scroll" data-target=".bs-docs-sidebar">
<!-- Navbar
================================================== -->
<div class="navbar navbar-inverse navbar-fixed-top">
<div class="navbar-inner">
<div class="container">
<button type="button" class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="brand" href="/home/index">GhostPubs.com</a>
<div class="nav-collapse collapse">
<ul class="nav">
<li>
<a href="/home/index">Home</a>
</li>
<li>
<a href="/home/index">News</a>
</li>
<li>
<a href="/home/index">Search</a>
</li>
<li>
<a href="/home/about">About us</a>
</li>
<li class="">
<a href="#" style="display: none">Not wired-up</a>
</li>
<li>
<a href="/bootstrap/index" style="display: none">Bootstrap example - Home</a>
</li>
<li>
<a href="/bootstrap/javascript" style="display: none">Bootstrap example- JavaScript</a>
</li>
</ul>
</div>
</div>
</div>
</div>
@RenderBody()
<!-- Footer
================================================== -->
<footer class="footer">
<div class="container">
<span class="label label-info">Designed and developed by <a href="http://carnotaurus.philipcarney.com" target="_blank">Philip Carney</a> </span>
</div>
</footer>
@Scripts.Render("~/bundles/jquery")
@RenderSection("scripts", required: false)
<!-- Le javascript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/bootstrap.js")"></script>
<script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/jquery.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/bootstrap-transition.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/bootstrap-alert.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/bootstrap-modal.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/bootstrap-dropdown.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/bootstrap-scrollspy.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/bootstrap-tab.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/bootstrap-tooltip.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/bootstrap-popover.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/bootstrap-button.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/bootstrap-collapse.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/bootstrap-carousel.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/bootstrap-typeahead.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/bootstrap-affix.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/holder.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/prettify.js")"></script>
<script src="@Url.Content("~/content/bootstrap/2.3.1/js/application.js")"></script>
</body>
</html>
错误是:对象引用未设置到对象的实例。
没有内部错误，但堆栈跟踪显示:
at RazorEngine.Templating.TemplateBase.RazorEngine.Templating.ITemplate.Run(ExecuteContext context) in c:\_git\RazorEngine\src\Core\RazorEngine.Core\Templating\TemplateBase.cs:line 139
at RazorEngine.Templating.TemplateService.Run(ITemplate template, DynamicViewBag viewBag) in c:\_git\RazorEngine\src\Core\RazorEngine.Core\Templating\TemplateService.cs:line 608
at RazorEngine.Templating.TemplateService.Parse(String razorTemplate, Object model, DynamicViewBag viewBag, String cacheName) in c:\_git\RazorEngine\src\Core\RazorEngine.Core\Templating\TemplateService.cs:line 439
at RazorEngine.Razor.Parse(String razorTemplate, Object model) in c:\_git\RazorEngine\src\Core\RazorEngine.Core\Razor.cs:line 251
at Carnotaurus.GhostPubsMvc.Web.Controllers.HomeController.GetViewHtmlIncludingLayout(Controller controller, Object model, String view, String layoutPath) in c:\test\GhostPubsMvc4\Carnotaurus.GhostPubsMvc.Web\Carnotaurus.GhostPubsMvc.Web\Controllers\HomeController.cs:line 59
at Carnotaurus.GhostPubsMvc.Web.Controllers.HomeController.CreateHtmlPage(AboutModel model, String view, String layoutPath, String targetFilename) in c:\test\GhostPubsMvc4\Carnotaurus.GhostPubsMvc.Web\Carnotaurus.GhostPubsMvc.Web\Controllers\HomeController.cs:line 41
at Carnotaurus.GhostPubsMvc.Web.Controllers.HomeController.About() in c:\test\GhostPubsMvc4\Carnotaurus.GhostPubsMvc.Web\Carnotaurus.GhostPubsMvc.Web\Controllers\HomeController.cs:line 34
at lambda_method(Closure , ControllerBase , Object[] )
at System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters)
at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.ActionInvocation.InvokeSynchronousActionMethod()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<BeginInvokeSynchronousActionMethod>b__36(IAsyncResult asyncResult, ActionInvocation innerInvokeState)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
at System.Web.Mvc.Async.AsyncResultWrapper.End[TResult](IAsyncResult asyncResult, Object tag)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3c()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass45.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3e()
最佳答案
在这里，我有针对您的问题的最佳和替代解决方案之一，它适用于 View 和 PartialView。这意味着在 View 中有或没有布局。给定的解决方案完全返回您在方法中实现的字符串。我已经在 https://stackoverflow.com/a/18978036/2318354 发布了这个解决方案.现在在这里我将详细解释 Controller 、 View 和模型。
首先使用以下方法创建一个类。
public static class RazorViewToString
{
public static string RenderRazorViewToString(this Controller controller, string viewName, object model)
{
if (controller == null)
{
throw new ArgumentNullException(nameof(controller), "The parameter controller cannot be null.");
}
if (controller.ControllerContext == null)
{
return string.Empty;
}
controller.ViewData.Model = model;
using (var sw = new StringWriter())
{
var viewResult = ViewEngines.Engines.FindPartialView(controller.ControllerContext, viewName);
var viewContext = new ViewContext(controller.ControllerContext, viewResult.View, controller.ViewData, controller.TempData, sw);
viewResult.View.Render(viewContext, sw);
viewResult.ViewEngine.ReleaseView(controller.ControllerContext, viewResult.View);
return sw.GetStringBuilder().ToString();
}
}
}
现在创建一个简单的模型，将其命名为 Test.cs
public class Test
{
public string Name { get; set; }
}
你的 Controller 应该是这样的
public ActionResult Index()
{
Test test = new Test();
test.Name = "XYZ";
string html = RazorViewToString.RenderRazorViewToString(this, "~/Views/Test/index.cshtml", test);
return View();
}
现在，即使在您的 View 中，无论您是否使用布局，它都可以正常工作，因为您的 View 可能是这样的
@model W2G.Models.Test
@using W2G.App_GlobalResources;
@{
ViewBag.Title = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}
This is test @Model.Name
所以上面的解决方案将从你的 Razor.Parse 返回你想要的精确值
希望对您有所帮助。
关于c# - 如何让 RazorEngine Parse 方法成功处理布局？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20592641/