CheckBoxFor Render Additional Input Tag - Get Value Using FormCollection?

May 18, 2010

In my ASP.NET MVC app I am rendering out a checkbox using the following code:

<%= Html.CheckBoxFor(i=>i.ReceiveRSVPNotifications) %>

Now I see that this renders both the checkbox input tag and a hidden input tag. The problem that I am having is when I try retrieve the value from the checkbox using the FormCollection:

FormValues["ReceiveRSVPNotifications"]

I get the value "true,false". When looking at the rendered out HTML I can see the following:

<input id="ReceiveRSVPNotifications" name="ReceiveRSVPNotifications" value="true" type="checkbox">
<input name="ReceiveRSVPNotifications" value="false" type="hidden">

So the FormValues collection seems to join these two values since they have the same name.

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