CODEWITHSUNDEEP
asp.nethtmlasp.net-mvc
Sali
Sali

Reputation: 87

set unchecked value of checkbox

Is there a way of setting the default unchecked value of a checkbox? Am not using a databound control. This is passing data from a form and would like it to pass false as opposed to null when unchecked.

Upvotes: 0

Views: 9838

Answers (3)

Arun Prasad E S
Arun Prasad E S

Reputation: 10115

I did it using Razor , works for me

Getting Value

bool CashOnDelivery = Product.CashOnDelivery == null ? false : Convert.ToBoolean(Product.CashOnDelivery);

Razor View

@Html.CheckBox("CashOnDelivery", CashOnDelivery) (Not nullable bit)

Razor don't support nullable bool

In C# side

 Insert.CashOnDelivery = Convert.ToBoolean(Collection["CashOnDelivery"].Contains("true")?true:false);

Upvotes: 0

David Glenn
David Glenn

Reputation: 24522

Yes, using the default HtmlHelpers will achieve this for you

<%: Html.Checkbox("myCheckbox") %>

or with Razor

@Html.Checkbox("myCheckbox")

The Checkbox() method will render a input type="hidden" field along side the input type="checkbox" that will submit the value false when the checkbox is unchecked.

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

If you want to submit a value other than false then you should render the checkbox and hidden field yourself setting the value of the hidden field to your default value. Note that they must have the same name attribute.

Upvotes: 5

Lazarus
Lazarus

Reputation: 43074

This can be achieved by adding an additional control to the form thus:

<input type="hidden" name="checkbox1" value="off">
<input type="checkbox" name="checkbox1" value="on"> My checkbox

That way you have a default value for your checkbox should it not be checked. If it is checked then the checkbox overrides the hidden field, for this to work the checkbox and the hidden field must have the same name.

Upvotes: 0

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