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2009-10-01T20:45:51.460
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2009-10-01T22:04:35.967
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What does the class declaration look like? Make sure you have made the class itself <code>static</code> as well: <pre><code>public static class MyHelpers { public static string OutputBlah(this HtmlHelper helper) { return helper.InnerWriter.ToString(); } } </code></pre> And then use the regular <code>Html</code> property of type <code>HtmlHelper</code> in the <code>View</code>: <pre><code><%= Html.OutputBlah() %> </code></pre> <hr> Answer to follow-up question from OP: When declaring a method like this (<code>static</code> method in <code>static class</code>, and with the first parameter with the <code>this</code> keyword), you define an <a href="http://msdn.microsoft.com/en-us/library/bb383977.aspx" rel="nofollow noreferrer">Extension Method</a> - a feature that was introduced in C# 3.0. The basic idea is that you define a method that is hooked into another class, thus extending it. In this case, you're extending the <code>HtmlHelper</code> class (becuase that is the type of the <code>this</code> parameter), and thereby making <code>.OutputBlah()</code> available on any instance of <code>HtmlHelper</code>. If you examine the <a href="http://msdn.microsoft.com/en-us/library/system.web.mvc.viewpage.html.aspx" rel="nofollow noreferrer"><code>Html</code></a> property of the <a href="http://msdn.microsoft.com/en-us/library/system.web.mvc.viewpage.aspx" rel="nofollow noreferrer"><code>ViewPage</code></a>, you'll notice that it is in fact of type <code>HtmlHelper</code>. So when you use <code>Html.OutputBlah()</code> in your view, you're actually accessing the <code>HtmlHelper</code> instance contained in the viewpage's <code>Html</code> property, and calling your own extension method on it.
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1. This table or related slice is empty.
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1. POHtml helper method not outputting results in mvc view page
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1. PTAnswer
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1. USTomas Lycken
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1. USTomas Lycken
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1. COHow will it be available under "Html." when it is my MyHelpers class?
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2. COBecause you have written an "extension method" which is new to C# 3.0. You specified the method as an extension method by placing "this" keyword in the first method parameter. There are tons of tutorials if you want to search for more information.
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 USMatt Hidinger

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