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首先，如果 看代码

<TextBlock Text={Binding Path=sss,Converter={StaticResource wwww},ConverterParameter=dddd}>

假如，在后台代码中，改变了ddd的值，是不会调用wwww的。

实现思路：

使用MultiBinding解决

把sss,ddd,封装到一个对象中，实现INoticefyPropertyChanged接口

   <TextBlock  Foreground="White" Background="Transparent" MinWidth="35" HorizontalAlignment="Center">
                                             <TextBlock.Text>
                                                <MultiBinding Converter="{StaticResource wwww1}">
                                                    <Binding Path="sss"/>
                                                    <Binding Path="dddd"/>
                                                </MultiBinding>
                                             </TextBlock.Text>
                                        </TextBlock>