CODEWITHSUNDEEP
c#wpf
webdad3
webdad3

Reputation: 9080

Binding with 2 or more dependency properties

I have a textbox in my WPF application and it is currently displaying if a dependency property is set. I'm wondering if there is a way to display this textbox using an OR statement? 

<TextBox Grid.Row="1" Height="23" Width="132" Margin="451,30,0,0" 
Text="{Binding Path=PositionName}" 
Style="{StaticResource TextBoxStyleValue}" 
Visibility="{Binding IsDepProp1, Converter={StaticResource BooleanToVisibilityConverter}, 
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}}" />

Something like:

Binding IsDepProp1 || IsDepProp2

Upvotes: 0

Views: 60

Answers (2)

Rohit Vats
Rohit Vats

Reputation: 81233

IMultiValueConverter is a way to go but however you can achieve that using two DataTriggers as well like this:

<TextBox Grid.Row="1" Height="23" Width="132" Margin="451,30,0,0" 
         Text="{Binding Path=PositionName}">
    <TextBox.Style>
        <Style TargetType="TextBox" BasedOn="{StaticResource TextBoxStyleValue}">
           <Setter Property="Visibility" Value="Collapsed"/>
           <Style.Triggers>
              <DataTrigger Binding="{Binding IsDepProp1,
                               RelativeSource={RelativeSource FindAncestor,
                                       AncestorType={x:Type UserControl}}}"
                            Value="True">
                  <Setter Property="Visibility" Value="Visible"/>
              </DataTrigger>
              <DataTrigger Binding="{Binding IsDepProp2,
                              RelativeSource={RelativeSource FindAncestor,
                                      AncestorType={x:Type UserControl}}}"
                           Value="True">
                  <Setter Property="Visibility" Value="Visible"/>
               </DataTrigger>
            </Style.Triggers>
         </Style>
      </TextBox.Style>
</TextBox>

Default value will be Collapsed and based on two triggers you can check if any of the property returns true, set visibility to Visible.

Upvotes: 1

poy
poy

Reputation: 10507

I belive you are looking for MultiBinding.

Check out: http://tech.pro/tutorial/809/wpf-tutorial-using-multibindings for a good explanation.

Basically though, you will have to implement IMultiValueConverter and use it for your value converter.

Upvotes: 2

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