Question

I have a combobox, and I want it to be enabled when checkbox is not checked. How do I write it? I tried following, but it seems that WPF doesn’t recognise this syntax:

<ComboBox IsEnabled={Binding Path=!CheckBoxIsChecked, Mode=OneWay}/>
<CheckBox IsChecked={Binding Path=CheckBoxIsChecked}/>

Answer 1

A trigger should work just as well for this:

   <CheckBox IsChecked="{Binding Path=CheckBoxIsChecked}" />
    <ComboBox Grid.Row="1" ItemsSource="{Binding Path=ComboItems}" SelectedItem="{Binding Path=SelectedItem, Mode=TwoWay}">
        <ComboBox.Style>
            <Style TargetType="ComboBox">
                <Style.Triggers>
                    <DataTrigger Binding="{Binding Path=CheckBoxIsChecked}" Value="False" >
                        <Setter Property="IsEnabled" Value="True"/>
                    </DataTrigger>
                    <DataTrigger Binding="{Binding Path=CheckBoxIsChecked}" Value="True" >
                        <Setter Property="IsEnabled" Value="False"/>
                    </DataTrigger>
                </Style.Triggers>
            </Style>
        </ComboBox.Style>
    </ComboBox>