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    <p>Give all your checkboxes a fixed name, like GenreIds.</p> <p>Then, in your action you should receive a <code>string[] genreIds</code> parameter.</p> <p>When posting the form, the genreIds is posted as am array, so it must be received in an array parameter.</p> <p>If this doesn't work because you have many categories and want to receive each group of GenreIds in its own category, then you can send a JSON representation of the form values and receive and deserialize it on the server side. To do so:</p> <p>On the razor template:</p> <ol> <li>Use the name of the genre to name all the checkboxes in each category</li> </ol> <p>Handle the form sumit event, and:</p> <ol> <li>Use <a href="http://api.jquery.com/serializeArray/" rel="nofollow">jQuery serializeArray</a>, to put all the form elements in an array</li> <li>Then use <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify" rel="nofollow">JSON.stringify</a> to convert this array to JSON format</li> <li>Finally copy this string to a hidden field with a fixed name and post the form. I.e. in a hidden field with the name "serializedFormValues"</li> </ol> <p>On the server side:</p> <ol> <li>Add a parameter to your action with the name "serializedFormValues", and type = string</li> <li>get the value of this parameter and deserialize the received JSON string, and use it on the server side</li> </ol> <p>If you use JSON.NET you can convert the <a href="http://james.newtonking.com/projects/json/help/index.html?topic=html/ConvertingJSONandXML.htm" rel="nofollow">JSON to XML</a>, or <a href="http://james.newtonking.com/projects/json/help/index.html?topic=html/DeserializeAnonymousType.htm" rel="nofollow">to an anonymous type object</a>. There are another posibilities.</p> <p>Remember that in any case, the genre Ids will always be <code>string[]</code> (or <code>int</code>, if ti's the case) and this arrays will only contain the checked values.</p> <p>There is a last posibility which is processing the <code>Request.Form</code> "manually". But this is harder to do.</p>
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