how to generate check box using @HTML.CheckboxFor with bool?

Question

In a form, I want to add a CheckBox to bind model value back to action. My model column is of type bool?

I tried the following code but getting error "Cannot implecitly convert type bool? to bool"

@Html.CheckBoxFor(m=>m.AccomPublic)

Please help me with correct way of using @HTML.CheckBoxFor.

Doesn't that help? stackoverflow.com/questions/6849774/…

The-First-Tiger
– The-First-Tiger

2014-10-04 00:58:29 +00:00
Commented Oct 4, 2014 at 0:58 — The-First-Tiger
– The-First-Tiger, Commented Oct 4, 2014 at 0:58

user3559349 · Accepted Answer · 2014-10-04 00:58:44Z

1

Instead of CheckBoxFor use

@Html.EditorFor(m=>m.AccomPublic)

This will render a drop down with 3 values (True, False and Not Set)

answered Oct 4, 2014 at 0:58

user3559349

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4 Comments

user576510 Over a year ago

Thanks @Stephen but cant do UI change.

user3559349 Over a year ago

You cant use a checkbox for a nullable bool. A checkbox has 2 states (true and false) where as a nullable bool has 3 states (true, false and null) so you need to change the property to bool, or change the UI to use a dropdown (or 3 radio buttons), or create you own control

user576510 Over a year ago

If I do something like "<input type="checkbox" name="AccomPublic" checked="@Model.AccomPublic" id="publichospitalasaprivatepatient" />" will it work with model binding ? Actually I tried and it is not working. Clicking or unclicking check-box do not change value in model. Is it expected behavior ?

user3559349 Over a year ago

No it wont work, because unchecked checkboxes do not post back so the only possible values you can recieve is true (checked) or null (not checked so nothing posts back). You can never check for false

Mahesh · Accepted Answer · 2015-01-06 13:48:57Z

0

This error is because of your property is of type nullable i.e. bool? Set your property as public bool nameofproperty{get;set;} And use @Html.checkboxFor(m=>m.nameofproperty)

answered Jan 6, 2015 at 13:48

Mahesh

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