How to get a Grid.Column value in a binding expression

Question

I need set background property by Grid.Column value. My idea was simple DataTrigger like this

<DataTrigger Binding="{Binding Grid.Column, ElementName=MyElement}" Value="2">
        <Setter Property="Background" Value="#F2F2F2"/>
</DataTrigger>

MyElement is a generice wpf control for example this:

<Border x:Name="MyElement" Grid.Column="2">
      Content
</Border>

But this is not working and Visual Studio says: Cann't resolve property Grid

I can use C# Grid.GetColumn(MyElement) as workaround. But I'm wondering, is there any xaml only solution here?

You cant use a border element to bind Grid.Column property to your textbox. Border will not contain Grid property in the class. Just use the Grid name for binding to the textbox. — Aakanksha, Sep 13 '19 at 04:35
I don't understand. I don't need bind `Grid.Column`I need read `Grid.Column` of some element in `DataTrigger` — Brandon, Sep 13 '19 at 04:41

score 1 · Accepted Answer · answered Sep 13 '19 at 04:49

1

To bind to an attached property, place parentheses around the attached property.

<DataTrigger Binding="{Binding Path=(Grid.Column), ElementName=MyElement}" Value="2">
        <Setter Property="Background" Value="#F2F2F2"/>
</DataTrigger>

answered Sep 13 '19 at 04:49

Aakanksha

329
2
7

Oh that is realy simple. Thank you :-) – Brandon Sep 13 '19 at 04:53

How to get a Grid.Column value in a binding expression

1 Answers1