mvc 4 asp.net c# passing boolean value from controller to view

Question

How can i get Boolean value or the true or false from controller to a Checkbox in View using this:

@Html.CheckBox("condition", @ViewData["Condition"])

or

<input type = "checkbox" checked = "**true or false?**">

I have this in my Controller..

public ActionResult Member(string sortOrder, string filter, string searchString, int? page, **bool? condition = false**)

and in my view is like this

please help me for this...

It just needs to be @Html.CheckBox("condition") And the parameter needs to be bool condition (not nullable). If the value of condition is true, the checkbox will display as checked, otherwise it will be unchecked. But I recommend you use a view model and pass it to the view so you can use the strongly typed HtmlHelper - @Html.CheckBoxFor(m => m.Condition) — user3559349
– user3559349, Commented Jan 14, 2016 at 1:27
checked is bool attribute. It's mere existence ensures the input is checked. So you don't want to checked=anything if false because it shouldn't be there i.e. a non checked checkbox would be <input type="checkbox" /> whereas <input type="checkbox" checked="false"/> will tick the box as will <input type="checkbox" checked="anything-you-like"/> If the checked attribute exists, it will be checked regardless of the value. — rism
– rism, Commented Jan 14, 2016 at 1:42

Community · Accepted Answer · 2017-05-23 12:31:32Z

2

update your controller

public ActionResult Member(string sortOrder, string filter, string searchString, int? page,bool condition)
{
    ViewData["Condition"] = condition;
    // code line 1
    // code line 2
       ... 
}

If you are looking for checkbox check/uncheck code for Razor view

@Html.EditorFor(x => x.condition)

Will generate:

<input id="condition" type="checkbox" value="true" name="condition" />
<input type="hidden" value="false" name="condition" />

How does it work:

If checkbox not checked, form submit only hidden (false) If checked, then form submit two fields (false and true) and MVC set true for bool property

<input id="condition" name="condition" type="checkbox" value="@ViewData["Condition"]" />

This will always send default value, if checked

reference : https://stackoverflow.com/a/14731571/2318852

edited May 23, 2017 at 12:31

CommunityBot

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answered Jan 14, 2016 at 1:33

Bhavik Patel

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2 Comments

Jorenz Quiogue Santiago Over a year ago

it's possible that <input type = "checkbox" checked = "true or false?" pass the checked value to a controller?

Dimitri Over a year ago

Thank you so much @BhavikPatel for this well detailed answer! Helped me out!

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