How can I provide multiple conditions for data trigger in WPF?

Question

How can I provide multiple conditions for data trigger in WPF?

Answer 1

Use MultiDataTrigger type

<Style TargetType="ListBoxItem">     <Style.Triggers>       <DataTrigger Binding="{Binding Path=State}" Value="WA">         <Setter Property="Foreground" Value="Red" />       </DataTrigger>           <MultiDataTrigger>         <MultiDataTrigger.Conditions>           <Condition Binding="{Binding Path=Name}" Value="Portland" />           <Condition Binding="{Binding Path=State}" Value="OR" />         </MultiDataTrigger.Conditions>         <Setter Property="Background" Value="Cyan" />       </MultiDataTrigger>     </Style.Triggers>   </Style> 

Answer 2

@jasonk - if you want to have "or" then negate all conditions since (A and B) <=> ~(~A or ~B)

but if you have values other than boolean try using type converters:

<MultiDataTrigger.Conditions>     <Condition Value="True">         <Condition.Binding>             <MultiBinding Converter="{StaticResource conditionConverter}">                 <Binding Path="Name" />                 <Binding Path="State" />             </MultiBinding>         </Condition.Binding>         <Setter Property="Background" Value="Cyan" />     </Condition> </MultiDataTrigger.Conditions> 

you can use the values in Convert method any way you like to produce a condition which suits you.