c# - 用偶数触发器改变复选框的状态

Question

我有这个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>

如果我取消勾选checkElder或者checkMinisterialServant它对checkNotAppointed. 正确的。

如果我然后取消勾选它们，它会检查checkNotAppointed并禁用。正确的。

如果我然后检查其他两个之一，它会启用checkNotAppointed但总是取消选中它。为什么？

Answer 1

您的 Setter 的 Binding 上有一个缺失部分（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进行检查：

<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>