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我想将TextBox's Tag(位于 a 内DataGrid)绑定到验证规则的 CurrentLegStrategy 属性(即 a DependencyProperty)。虽然我已经使用全局隧道对象对 Deal 依赖属性做了类似的事情,但是无法弄清楚 CurrentLegStrategy 的隧道是什么(理想情况下应该来自绑定数据到DataRow或绑定数据到TextBox标签)?

<DataTemplate x:Key="PremiumProp">
    <TextBlock Style="{StaticResource TextBlockLeft}" Tag="{Binding Strategy}" x:Name="txtPremiumProp">                     
        <TextBlock.Text>
            <Binding Path="AbsolutePremium" StringFormat="{}{0:#,##0.00####}" Converter="{StaticResource _DoubleConvertor}">
                <Binding.ValidationRules>
                    <Control:MBSStrategyBasedDoubleValidation ValidatesOnTargetUpdated="True" ValidationTag="premabs"
                            ErrorMessage="Please enter a valid positive (+) premium (also check the reference which is required for auto calculation)!">
                        <Control:MBSStrategyBasedDoubleValidation.Deal>
                            <Control:DealObject Deal="{Binding Tag, Source={StaticResource TradeTunnel}}" CurrentLegStrategy="{Binding Path=Tag, ElementName=txtPremiumProp}"/>
                        </Control:MBSStrategyBasedDoubleValidation.Deal>
                    </Control:MBSStrategyBasedDoubleValidation>
                </Binding.ValidationRules>
            </Binding>
        </TextBlock.Text>
    </TextBlock>
</DataTemplate>

然后我也试了,

<TextBlock.Resources>
    <ResourceDictionary>
        <FrameworkElement x:Name="strategySource" Tag="{Binding Tag, Source={x:Reference txtPremiumProp}}"/>
    </ResourceDictionary>    
</TextBlock.Resources>

具有以下内容:

CurrentLegStrategy="{Binding Path=Tag, Source={StaticResource strategySource}}"

找不到名为“strategySource”的资源。资源名称区分大小写。

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