Using mulitple checkboxes in ASP.NET MVC

Question

Is there anyway to work with multiple check boxes in MVC. I am getting both true and false values in query string when using the example below.I just want to pass if it was checked True or if it was not checked False.

'http://'webapp':5841/Result/Triggers?Alcohol=true&Alcohol=false&Awakening=true&Awakening=false&Coffee=true&Coffee=false'

public class Triggers
{
    public string Alcohol { get; set; }
    public string Awakening { get; set; }
    public string Coffee {get; set;}

}



 @using (HTML.BeginForm("Triggers", "Result", FormMethod.Get))
            {
                   '@Html.CheckBox("Alcohol")'

                    '@Html.CheckBox("Awakening")'

                    '@Html.CheckBox("Coffee")'
              }


    [HttpGet]
    public ViewResult Triggers()
    {
        return View();
    }

Take a look here: http://stackoverflow.com/questions/5462967/razor-viewengine-html-checkbox-method-creates-a-hidden-input-why — Floremin, May 07 '13 at 17:30

score 3 · Accepted Answer · answered May 07 '13 at 17:29

3

This is actually by design.

The CheckBox() (and RadioButton()) helper generates a second <input type="hidden" name="yourName" value="False" />.

This makes sure that unchecked checkboxes are still sent back to the server for model binding.

If the checkbox is checked, the browser will send two values, and the model binder will use the second one.

answered May 07 '13 at 17:29

SLaks

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one of the weirdest gotchas in .net mvc. – Forty-Two May 07 '13 at 17:33
so what if i want to use the true value – user2224493 May 07 '13 at 17:42
@user2224493: The model binder will take care of this automatically. – SLaks May 07 '13 at 17:48

Using mulitple checkboxes in ASP.NET MVC

1 Answers1