折叠可见性时如何禁用组合框元素的验证？

Question

我想在 ComboBox 或 TextBox 的可见性折叠时禁用它们的验证。我可以在 XAML 代码中实现这一点吗？

            <ComboBox Name="XYZCb" ItemsSource="{Binding XYZ}" Visibility="{Binding IsVisible, Converter={StaticResource BoolToVisibilityConverter}}">
                <ComboBox.Text>
                    <Binding Path="xyz" UpdateSourceTrigger="PropertyChanged">
                        <Binding.ValidationRules>
                            <valid:ValidationRule ValidatesOnTargetUpdated="True"/>
                        </Binding.ValidationRules>
                    </Binding>
                </ComboBox.Text>
            </ComboBox>

按钮属性绑定：

<Button.IsEnabled>
    <MultiBinding Converter="{StaticResource InverseAndBooleansToBooleanConverter}"
                  Mode="TwoWay">
        <Binding ElementName="XYZCb" Path="(Validation.HasError)"/> 
    </MultiBinding>
<Button.IsEnabled>

Answer 1

如果我没看错你需要什么：

    <Button>
        <Button.Style>
            <Style TargetType="Button">
                <Style.Triggers>
                    <MultiDataTrigger>
                        <MultiDataTrigger.Conditions>
                            <Condition Binding="{Binding Path=(Validation.HasError), ElementName=XYZCb}" Value="True"/>
                            <Condition Binding="{Binding Visibility, ElementName=XYZCb}" Value="Visible"/>
                        </MultiDataTrigger.Conditions>
                        <Setter Property="IsEnabled" Value="False"/>
                    </MultiDataTrigger>
                </Style.Triggers>
            </Style>
        </Button.Style>
    </Button>

别忘了删除您的 <Button.IsEnabled> 绑定。

折叠可见性时如何禁用组合框元素的验证？

How to disable validation of a combox element when visibility is collapsed?

c#

wpf

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validationrules