MVC Html.CheckBox and form submit issue

Question

Crazy issue with submitting of values in Html.Checkbox in ASP.NET MVC RC

Some of the values are just not come to Request.Params

At my form I have this line i

Answer 1

This is actually the way it should work according to specifications.

It has nothing to do with ASP.NET MVC, but when a check box is left unchecked it is not included in the POST collection.

You get two values because you have both a checkbox and an input with the same name (and the ones you have two values for are most likely the ones with checkboxes checked).

Edit: specifications from W3C