Asp.net-mvc – Using Html.RenderPartial() in ascx files

asp.net-mvcpartial-viewsrenderpartial

I'm trying to use Html.RenderPartial in acsx file
and I'm getting an error:

Compiler Error Message: CS1973: 'System.Web.Mvc.HtmlHelper'
has no applicable method named 'RenderPartial' but appears to have an
extension method by that name. Extension methods cannot be dynamically
dispatched. Consider casting the dynamic arguments or calling the
extension method without the extension method syntax

<a href="/projects/<%=project.Id %>">
  <% Html.Label("fdf"); %>
  <% Html.RenderPartial("ProjectName", Model.Id); %></a></li>
 <%} %>

However I've import neccessary namespaces, so it won't be error at

<% Html.Label("fdf"); %>

Are there any methods to use Html.RenderPartial in ascx file?

Best Answer

The compiler cannot choose the correct method because your Model is dynamic. Change the call to:

<% Html.RenderPartial("ProjectName", (int)(Model.Id)); %>

Or any other datatype Id is.

Related Solutions

Asp.net-mvc – ASP.NET MVC Beta 1 – where is Html.RenderPartial

And also don't forget to add namespaces like below to the web config, I think preview 5 default web.config does not have System.Web.Mvc.Html in it:

<namespaces>
 <add namespace="System.Web.Mvc"/>
 <add namespace="System.Web.Mvc.Ajax"/>
 <add namespace="System.Web.Mvc.Html"/>
 <add namespace="System.Web.Routing"/>
 <add namespace="System.Linq"/>
 <add namespace="System.Collections.Generic"/>
</namespaces>

.net – Html.Partial vs Html.RenderPartial & Html.Action vs Html.RenderAction

Html.Partial returns a String. Html.RenderPartial calls Write internally and returns void.

The basic usage is:

// Razor syntax
@Html.Partial("ViewName")
@{ Html.RenderPartial("ViewName");  }

// WebView syntax
<%: Html.Partial("ViewName") %>
<% Html.RenderPartial("ViewName"); %>

In the snippet above, both calls will yield the same result.

While one can store the output of Html.Partial in a variable or return it from a method, one cannot do this with Html.RenderPartial.

The result will be written to the Response stream during execution/evaluation.

This also applies to Html.Action and Html.RenderAction.

Best Answer

Related Solutions

Asp.net-mvc – ASP.NET MVC Beta 1 – where is Html.RenderPartial

.net – Html.Partial vs Html.RenderPartial & Html.Action vs Html.RenderAction

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