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PO'System.Action' does not take 1 arguments HtmlHelper MVC3
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  1. PO'System.Action' does not take 1 arguments HtmlHelper MVC3
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    copied!<p>I'm getting an exception when using html helpers in mvc3. I got the exception originally when using LabelFor and TextAreaFor with a 'virtual' parameter of a class. When I removed the virtual keyword it worked fine. </p> <p>I've now come to add a LabelFor and an RadioBoxForEnum (Custom helper) and these use an enum (which isn't virtual) and I'm getting the exception again.</p> <p>Not sure whether it makes any difference but I've put this into a Telerik Tab.</p> <p>The exception is:</p> <pre><code>CS1593: Delegate 'System.Action' does not take 1 arguments </code></pre> <p>Here's the code:</p> <pre><code>items.Add().Text("Categorisation").Content(@&lt;text&gt; &lt;div class="TabContent"&gt; &lt;div class="5050SplitLeft"&gt; @Html.LabelFor(o =&gt; o.ChangeProposalHeader.ChangeProposal.ProgrammeCategory, "Programme:") @Html.TextAreaFor(o =&gt; o.ChangeProposalHeader.ChangeProposal.ProgrammeCategory &lt;br /&gt; @Html.LabelFor(o =&gt; o.ChangeProposalHeader.ChangeProposal.InterfaceCategory, "Interface:") @Html.TextAreaFor(o =&gt; o.ChangeProposalHeader.ChangeProposal.InterfaceCategory) &lt;br /&gt; @Html.LabelFor(o =&gt; o.ChangeProposalHeader.ChangeProposal.TechnicalReadinessCategory, "Technical Readiness Level:") @Html.TextAreaFor(o =&gt; o.ChangeProposalHeader.ChangeProposal.TechnicalReadinessCategory) &lt;br /&gt; @Html.LabelFor(o =&gt; o.ChangeProposalHeader.ChangeProposal.DesignChangeRequirementCategory, "Design Change Requirement Category:") @Html.TextAreaFor(o =&gt; o.ChangeProposalHeader.ChangeProposal.DesignChangeRequirementCategory) &lt;br /&gt; @Html.LabelFor(o =&gt; o.ChangeProposalHeader.ChangeProposal.FitType, "Fit Type:") @Html.RadioButtonForEnum(o =&gt; o.ChangeProposalHeader.ChangeProposal.FitType) &lt;/div&gt; &lt;div class="5050SplitRight"&gt; &lt;/div&gt; &lt;/div&gt;&lt;/text&gt;); </code></pre> <p>Heres the code for the Helper (I got this from another thread on SO)</p> <pre><code> public static class HtmlExtensions { public static MvcHtmlString RadioButtonForEnum&lt;TModel, TProperty&gt;( this HtmlHelper&lt;TModel&gt; htmlHelper, Expression&lt;Func&lt;TModel, TProperty&gt;&gt; expression ) { var metaData = ModelMetadata.FromLambdaExpression(expression, htmlHelper.ViewData); var names = Enum.GetNames(metaData.ModelType); var sb = new StringBuilder(); foreach (var name in names) { var id = string.Format( "{0}_{1}_{2}", htmlHelper.ViewData.TemplateInfo.HtmlFieldPrefix, metaData.PropertyName, name ); var radio = htmlHelper.RadioButtonFor(expression, name, new { id = id }).ToHtmlString(); sb.AppendFormat( "&lt;label for=\"{0}\"&gt;{1}&lt;/label&gt; {2}", id, HttpUtility.HtmlEncode(name), radio ); } return MvcHtmlString.Create(sb.ToString()); } } </code></pre> <p>Thanks in advance.</p> <p>J</p>
 

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