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POMVC3 Razor Extension: Returning two controls
 

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    <p>I am trying to create an extension that renders a read-only drop down list. It appears that just slapping a <code>readonly="true"</code> attribute on the <code>&lt;select&gt;</code> element does not work, so I would like to render a disabled <code>&lt;select&gt;</code> element and a hidden input.</p> <p>Here's the code I have so far:</p> <pre><code>public static MvcHtmlString DropDownListFor&lt;TModel, TProperty&gt;(this HtmlHelper&lt;TModel&gt; htmlHelper, Expression&lt;Func&lt;TModel, TProperty&gt;&gt; expression, IEnumerable&lt;SelectListItem&gt; selectList, object htmlAttributes, bool isReadonly) { var values = new RouteValueDictionary(htmlAttributes); if (isReadonly) values["disabled"] = "disabled"; var select = htmlHelper.DropDownListFor&lt;TModel, TProperty&gt;(expression, selectList, values); var hiddenField = htmlHelper.HiddenFor&lt;TModel, TProperty&gt;(expression); var bothFields = ?; return bothFields; } </code></pre> <p><b>What is the right way to render out multiple controls from a Razor extension?</b></p> <p><em><strong>Edited: Solution</em></strong></p> <p>Figured it out. Evidently you can just call <code>ToString()</code> on two elements and return that. As Jerad pointed out, the <code>&lt;select&gt;</code>'s id must be modified so it's not the same as the id of the hidden input. My final code looks like this:</p> <pre><code>public static MvcHtmlString DropDownListFor&lt;TModel, TProperty&gt;( this HtmlHelper&lt;TModel&gt; htmlHelper, Expression&lt;Func&lt;TModel, TProperty&gt;&gt; expression, IEnumerable&lt;SelectListItem&gt; selectList, object htmlAttributes, bool isReadonly) { if (isReadonly) { var values = new RouteValueDictionary(htmlAttributes); values["disabled"] = "disabled"; values["id"] = (expression.Body as MemberExpression).Member.Name + "_Disabled"; var select = htmlHelper.DropDownListFor&lt;TModel, TProperty&gt;(expression, selectList, values); var hiddenField = htmlHelper.HiddenFor&lt;TModel, TProperty&gt;(expression); return new MvcHtmlString(select.ToString() + hiddenField.ToString()); } else { return htmlHelper.DropDownListFor&lt;TModel, TProperty&gt;(expression, selectList, htmlAttributes); } } </code></pre>
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