How to get checkbox value from FormCollection?

Question

I have a checkbox and button:

@using(Html.BeginForm())
{
    <div id="search-block">
        <input type="checkbox" name="showAll" id="showAll">Include completed
        <input type="submit" value="Apply"/>
    </div>
}

and second thing in controller:

[HttpPost]
public ActionResult Index(FormCollection collection)
{
    var showAll = collection["showAll"];
    TempData["showAll"] = showAll;

    ... 
    something
    ...
}

It's actually working, BUT:

If checkboxes are not checked, I am receiving null (doesn't bother me much).

If checkboxes are checked, I am receiving "on" from FormCollection, and this is not what I need. I want to receive true or false.

How can I do this?

Answer 1

Try this

bool MyBoolValue= collection["showAll"].Count > 1;

when 1 then false

when 2 then true