String format using MultiBinding?

Question

I'm trying to display a string in XAML using Label control. Following is my XAML code :

<Label Height="28" HorizontalAlignment="Left" Margin="233,68,0,0" Name="label13" VerticalAlignment="Top">     <Label.Content>         <MultiBinding StringFormat="{}{0} x {1}">               <Binding Path="Width" />               <Binding Path="Height" />         </MultiBinding>     </Label.Content> 

Width and Height are two properties of my class Movie. I want the label to display : "Width x Height" ex. 800 x 640 However the label control remains empty. Any help is appreciated. I WANT TO DO THIS WITHOUT USING A CONVERTER.

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I have modified my xaml by using a TextBlock instead of Label. But still it wont populate display the output.

<TextBlock Height="28" HorizontalAlignment="Left" Margin="233,68,0,0" Name="label13" VerticalAlignment="Top">                 <TextBlock.Text>                     <MultiBinding StringFormat="{}{0} x {1}">                         <Binding Path="Width" />                         <Binding Path="Height" />                     </MultiBinding>                 </TextBlock.Text>             </TextBlock> 

Answer 1

you are trying to bind a string to an object. But StringFormat requires its target to be a string type.

try putting a TextBlock in your label content and bind your data to it

<StackPanel>   <Slider x:Name="sl1" Minimum="10" Maximum="100"/>   <Slider x:Name="sl2" Minimum="10" Maximum="100"/>   <Label x:Name="label13" Background="Yellow" Foreground="Black">     <Label.Content>         <TextBlock>           <TextBlock.Text>             <MultiBinding StringFormat="{}{0} x {1} Test">               <Binding ElementName="sl1" Path="Value" />               <Binding ElementName="sl2" Path="Value" />             </MultiBinding>           </TextBlock.Text>         </TextBlock>     </Label.Content>   </Label> </StackPanel> 

EDIT your class Movie must implement the INotificationPropertyChanged interface and your two properties must raise the property changed event with their proprty names!

hope this helps