如何将ASP.NET MVC ViewResult呈现为HTML？

Question

在测试情况下,我希望能够使用默认的viewEngine将给定的ViewResult呈现为HTML.

目前,我的观点是基于WebForms的.但是我可能会在某些时候看到Spark或Razor的观点.现在,我想专注于WebForms.我可以从测试中渲染我的观点吗？

Answer 1

这是一个方法,可以将ViewResult渲染为字符串.在你的上下文中使用它的唯一棘手的部分是模拟一个可行的ControllerContext.

static string RenderPartialViewToString(ControllerContext context, ViewResultBase partialViewResult)
    {
        Require.ThatArgument(partialViewResult != null);
        Require.That(context != null);
        using (var sw = new StringWriter())
        {
            if (string.IsNullOrEmpty(partialViewResult.ViewName))
            {
                partialViewResult.ViewName = context.RouteData.GetRequiredString("action");
            }
            ViewEngineResult result = null;
            if (partialViewResult.View == null)
            {
                result = partialViewResult.ViewEngineCollection.FindPartialView(context, partialViewResult.ViewName);
                if(result.View == null)
                    throw new InvalidOperationException(
                                   "Unable to find view. Searched in: " +
                                   string.Join(",", result.SearchedLocations));
                partialViewResult.View = result.View;
            }

            var view = partialViewResult.View;
            var viewContext = new ViewContext(context, view, partialViewResult.ViewData,
                                              partialViewResult.TempData, sw);
            view.Render(viewContext, sw);
            if (result != null)
            {
                result.ViewEngine.ReleaseView(context, view);
            }
            return sw.ToString();
        }
    }