ASP.NET mvc 3 razor : Html Helper Extension Method - executed but dosen't print html
Hi I have problem with my html helper extension method in razor view engine. I want to render SideMenu if I have any nodes to print:
<!DOCTYPE html>
<html>
<head>
<title>@ViewBag.Title</title>
<link href="@Url.Content("~/Content/Site.css")" rel="stylesheet" type="text/css" />
<script src="@Url.Content("~/Scripts/jquery-1.4.4.min.js")" type="text/javascript"></script>
</head>
@using MyNamespace.Helpers
<body>
<div id = "page" style = "width: 90%; margin: 0 auto" class="pageSection">
<div id="logo" class="pageSection">aaaa</div>
<div id = "LeftMenuContainer">
@{ if (ViewBag.Menu.LeftMenu.Count > 0)
{
Html.RenderSideMenu((ICollection<MyNamespace.MenuNode>)(ViewBag.Menu.LeftMenu开发者_如何学编程));
}
}
</div>
<div id="content" class="pageSection">@RenderBody()</div>
<div id="footer" class="pageSection"></div>
</div>
</body>
</html>
and here's my method:
public static MvcHtmlString RenderSideMenu(this HtmlHelper helper, ICollection<MenuNode> nodes)
{
string result = "<h3>Menu</h3>";
result += "<ul class=\"SideMenu\">";
foreach (var node in nodes)
result += MenuRenderEngine.RenderNode(node);
result += "</ul>";
return MvcHtmlString.Create(result);
}
The problem is that method is executed and returns well prepared string but doesn't print it in view so I'm confused what did I wrong?
Use @ if you want to output the result on the page:
<div id = "LeftMenuContainer">
@if (ViewBag.Menu.LeftMenu.Count > 0)
{
@Html.RenderSideMenu((ICollection<MyNamespace.MenuNode>)(ViewBag.Menu.LeftMenu));
}
</div>
Also, as a side note, don't use ViewBag, use view models instead.
加载中,请稍侯......
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