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Simple Razor Helper in App_Code Folder:
MyHelper.cshtml
@using System.Web.Mvc
@helper SimpleHelper(string inputFor){
<span>@inputFor</span>
Html.RenderPartial("Partial");
}
Simple View in Views/Shared Folder:
MyView.cshtml
<html>
<head
</head>
<body>
@WFRazorHelper.SimpleHelper("test")
</body>
</html>
Simple Partial View in Views/Shared Folder:
Partial.cshtml
<h1>Me is Partial</h1>
Compiler throws an Error:
CS1061: 'System.Web.WebPages.Html.HtmlHelper' enthält keine Definition für 'RenderPartial', und es konnte keine Erweiterungsmethode 'RenderPartial' gefunden werden, die ein erstes Argument vom Typ 'System.Web.WebPages.Html.HtmlHelper' akzeptiert (Fehlt eine Using-Direktive oder ein Assemblyverweis?).
But if I call Html.RenderPartial in MyView.cshtml everything works fine.
I guess I have to change some web.configs, because the HtmlHelper in MyView is taken from System.Web.Mvc and the HtmlHelper in MyHelper.cshtml is taken from System.Web.WebPages.
How do I fix this?
899
Html is a property of the WebPage, so you have access to it only inside the view. The custom helper in your App_Code folder doesn't have access to it.
So you need to pass the HtmlHelper as parameter if you need to use it inside:
@using System.Web.Mvc.Html
@helper SimpleHelper(System.Web.Mvc.HtmlHelper html, string inputFor)
{
<span>@inputFor</span>
html.RenderPartial("Partial");
}
and then call the custom helper by passing it the HtmlHelper instance from the view:
<html>
<head>
</head>
<body>
@WFRazorHelper.SimpleHelper(Html, "test")
</body>
</html>
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