Question

我有CheckBox：

<CheckBox x:Name="checkNotAppointed" Grid.Column="1" Grid.Row="2" Content="Not Appointed" >
    <CheckBox.Style>
        <Style TargetType="{x:Type CheckBox}">
            <Setter Property="Margin" Value="2" />
            <Setter Property="IsEnabled" Value="True" />
            <Setter Property="IsChecked" Value="{Binding FilterForNotAppointed, UpdateSourceTrigger=PropertyChanged}" />
            <Style.Triggers>
                <MultiDataTrigger>
                    <MultiDataTrigger.Conditions>
                        <Condition Binding="{Binding IsChecked, ElementName=checkElder}" Value="True" />
                        <Condition Binding="{Binding IsChecked, ElementName=checkMinisterialServant}" Value="False" />
                    </MultiDataTrigger.Conditions>
                    <Setter Property="IsEnabled" Value="True" />
                </MultiDataTrigger>
                <MultiDataTrigger>
                    <MultiDataTrigger.Conditions>
                        <Condition Binding="{Binding IsChecked, ElementName=checkElder}" Value="False" />
                        <Condition Binding="{Binding IsChecked, ElementName=checkMinisterialServant}" Value="True" />
                    </MultiDataTrigger.Conditions>
                    <Setter Property="IsEnabled" Value="True" />
                </MultiDataTrigger>
                <MultiDataTrigger>
                    <MultiDataTrigger.Conditions>
                        <Condition Binding="{Binding IsChecked, ElementName=checkElder}" Value="False" />
                        <Condition Binding="{Binding IsChecked, ElementName=checkMinisterialServant}" Value="False" />
                    </MultiDataTrigger.Conditions>
                    <Setter Property="IsChecked" Value="True" />
                    <Setter Property="IsEnabled" Value="False" />
                </MultiDataTrigger>
            </Style.Triggers>
        </Style>
    </CheckBox.Style>
</CheckBox>

如果我取消checkElder或checkMinisterialServant，则不会影响checkNotAppointed。正确的。

如果我然后取消它们两者，它会检查checkNotAppointed并禁用。正确的。

如果我再检查其他两个中的一个，它会启用checkNotAppointed，但始终取消选中它。为什么呢？

Answer 1

Setter的Binding上有一个缺失的部分（IsChecked），它应该是：

  <Setter Property="IsChecked" Value="{Binding IsChecked, ElementName=FilterForNotAppointed}"/>

根据您的评论，FilterForNotAppointed是另一个组合框，因此您可以通过添加以下内容来检查它：

<StackPanel Orientation="Horizontal">
        <Label Content="FilterForNotAppointed' IsChecked:"/>
        <TextBlock VerticalAlignment="Center" Text="{Binding IsChecked, ElementName=FilterForNotAppointed}"/>
 </StackPanel>

 <StackPanel Orientation="Horizontal">
        <Label Content="checkNotAppointed's IsChecked:"/>
        <TextBlock VerticalAlignment="Center" Text="{Binding IsChecked, ElementName=checkNotAppointed}"/>
 </StackPanel>

使用偶数触发器更改复选框的状态

1 个答案: