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Why in the world does the line:
<%= Html.CheckBox("ForSale", Model.Product.ForSale)%> For Sale result in the following HTML:
<input id="ForSale" name="ForSale" type="checkbox" value="true" /> <input name="ForSale" type="hidden" value="false" /> For Sale Now whenever I check the box and access Request.Form["ForSale"], I get the ridiculous answer of "true,false". Am I supposed to parse that?
This hidden field doesn't appear for the other HtmlHelper controls, so why does it for CheckBox?
How do I turn this stupid "feature" off? Or did the HtmlHelper just outgrow its usefulness?
Update
From the answer below, it seems that there is some logic behind this. I have prepared a little extension method so I don't have to think about it (thanks to @eu-ge-ne):
public static bool GetCheckBoxValue(this System.Web.HttpRequestBase req, string name) { return Convert.ToBoolean(req.Form.GetValues(name).First()); } 
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Explanation: you were reading the value of the checkbox which is always true, you need to check whether its checked attribute is checked or unchecked. I used the ternary operator to check check whether it's checked or not You could have also used $("#status").is(":checked") but it is slower. Show activity on this post.
The <input type="checkbox"> defines a checkbox. The checkbox is shown as a square box that is ticked (checked) when activated. Checkboxes are used to let a user select one or more options of a limited number of choices. Tip: Always add the <label> tag for best accessibility practices!
CheckBox is generating an additional hidden field with a false value. It is because, when you not select a checkbox, still form sends a false value to the server.
It forces the field to be included if it's unchecked. If you uncheck a check box it doesn't get sent as part of the page - they are only sent if they're checked, and then there's a value of true. The hidden field ensures that false will be send if the check box is unchecked, as the hidden field is always sent.
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