Why my Binding dosen't work?

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Hi my friends
i have a XAML file like follwoing:

<Grid>
        <Label x:Name="AttachmentNameLabel" Content="Attachment"
               Height="35" Width="80" Background="AliceBlue"
               BorderBrush="LightGray" BorderThickness="1.5" VerticalContentAlignment="Center">
            <Label.ContextMenu>
                <ContextMenu>
                    <MenuItem x:Name="PreviewMenuItem" Header="{Binding ElementName=AttachmentNameLabel,Path=Tag}"/>
                </ContextMenu>
            </Label.ContextMenu>
        </Label>
    </Grid>

but MenuItem.Header binding doesn't work. why?
please represent solution.
thanks

Posted 11-Sep-13 19:03pm

aliwpf

Updated 11-Sep-13 19:05pm

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rohith naik 12-Sep-13 8:09am

Are you sure that the tag property is string ??

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dev hedgehog · Answer 1 · 2013-09-22T01:54:00

Hello

Binding in ContextMenu doesn't work the way you think.

ContextMenu is something every wpf control possess therefore ContextMenu holds a property called PlacementTarget which as the name says identifies the target control where ContextMenu will be placed.

Now to your question. If you wish to use Binding in ContextMenu you will have to do it this way:

<stackpanel tag="this will be the header">
   <contextmenu>
           <menuitem>
               Header="{Binding PlacementTarget.Tag, RelativeSource={RelativeSource Self}}"
           </menuitem>
    </contextmenu>
</stackpanel>

See what I am trying to say? In my example PlacementTarget is the StackPanel.