/// <summary>
/// 渲染部分视图
/// </summary>
/// <param name="partialElement">partial 元素</param>
/// <returns></returns>
protected virtual string RenderPartial(IHtmlElement partialElement)
{
var action = partialElement.Attribute("action").Value();
var view = partialElement.Attribute("view").Value();
var path = partialElement.Attribute("path").Value();
var handler = partialElement.Attribute("handler").Value();
var helper = MakeHelper();
try
{
if (action != null)//Action 部分视图
{
var controller = partialElement.Attribute("controller").Value() ?? (string)RouteData.Values["controller"];
var routeValues = GetRouteValues(partialElement);
return(helper.Action(actionName: action, controllerName: controller, routeValues: routeValues).ToString());
}
else if (view != null)
{
return(helper.Partial(partialViewName: view).ToString());
}
else if (path != null)
{
if (!VirtualPathUtility.IsAppRelative(path))
{
throw new FormatException("path 只能使用应用程序根相对路径，即以 \"~/\" 开头的路径，调用 VirtualPathUtility.ToAppRelative 方法或使用 HttpRequest.AppRelativeCurrentExecutionFilePath 属性获取");
}
var content = HtmlProviders.LoadContent(HttpContext, path);
if (content != null)
{
return(content.Content);
}
}
}
catch (ThreadAbortException)
{
}
catch //若渲染时发生错误
{
if (MvcEnvironment.Configuration.IgnorePartialRenderException || partialElement.Attribute("ignoreError") != null)
{
return("<!--parital view render failed-->");
}
else
{
throw;
}
}
throw new NotSupportedException("无法处理的partial标签：" + ContentExtensions.GenerateTagHtml(partialElement, false));
}
public ActionResult PageViewer(string hash, string selector)
{
if (hash == null)
{
return(null);
}
Stopwatch watch = new Stopwatch();
watch.Start();
var document = HtmlProviders.LoadDocument("~/Content/" + hash + ".html");
watch.Stop();
if (document == null)
{
return(HttpNotFound());
}
ViewData["Document"] = document;
ViewData["Timespan"] = watch.Elapsed;
ViewData["SelectorExpression"] = selector;
var _selector = CssParser.ParseSelector(selector);
if (_selector != null)
{
ViewData["Selector"] = _selector;
ViewData["SelectedElements"] = _selector.Filter(document.Descendants()).Count();
}
return(PartialView("PageViewer"));
}
public CachePolicy CreateCachePolicy(HttpContextBase context)
{
return(HtmlProviders.GetCachePolicy(context));
}
/// <summary>
/// 使用 MvcParser 分析加载文档。
/// </summary>
/// <param name="context">当前 HTTP 请求上下文</param>
/// <param name="virtualPath">文档的虚拟路径</param>
/// <returns>加载的文档对象</returns>
public static IHtmlDocument LoadDocument(HttpContextBase context, string virtualPath)
{
return(HtmlProviders.LoadDocument(context, virtualPath));
}
