How to bind a checkbox's inverse of IsChecked property to another checkbox IsChecked property

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How to bind a checkbox's inverse of IsChecked property to another checkbox IsChecked property?

Posted 28-Feb-11 23:02pm

vivektp

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3 solutions

Solution 2

If you want to bind two check boxes, you completely defeat the purpose of this control. It is designed to represent independent option. You're trying to mimic behavior of radio button. This is bad! And your user will be confused.

—SA

Posted 1-Mar-11 6:47am

Sergey Alexandrovich Kryukov

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vivektp 1-Mar-11 23:15pm

i am sorry..i have a checkbox and a togglebutton actually

Sergey Alexandrovich Kryukov 2-Mar-11 0:01am

Same thing.
--SA

Sergey Alexandrovich Kryukov 2-Mar-11 3:06am

I don't care how you vote, the idea is bad, not acceptable. Who is loosing, anyway?
--SA

Solution 3

Another way to do it is to extend the CheckBox class and override the checked property to return the inverse. Something like

C#

class InverseCheckBox : CheckBox
    {
        new public bool Checked
        {
            get { return !base.Checked; }
            set { base.Checked = !value; }
        }

    }

I haven't rigorously tested this solution, and am unsure of any side effects, but I hope someone finds this useful :)

Posted 14-Sep-12 10:05am

muleycharge

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Tarun.K.S · Accepted Answer · 2011-03-01T03:26:00

Hi vivek,

This can be done in XAML itself using Triggers.

XAML :
Include the below in Grid.Resources or in Window

XML

<Style x:Key="ch" TargetType="CheckBox">
    <Style.Triggers>
        <DataTrigger Binding="{Binding ElementName=check2, Path=IsChecked}" Value="False">
            <Setter Property="IsChecked" Value="True"/>
        </DataTrigger>
    </Style.Triggers>
</Style>

And assign this style to a checkbox, lets say CheckBox1 by doing in this way :

XML

<checkbox name="check1" style="{StaticResource ch}" />

What this trigger does is that, it will check the value of Checkbox2's IsChecked property. If its false, then check1's IsChecked value will be true(like you wanted it to be inversed).

If you don't want the values to be inversed then, it can be down straight away in check1 by doing this :

XML

<checkbox name="check1" ischecked="{Binding ElementName=check2, Path=IsChecked}" />

Hope it helped!