Question

I have a ComboBox, bound to a list of objects. I can get the objects to fill the drop down just fine. I am trying to set the background color for each object in the items list of the dropdown. I can set any color for all of them easily in the below style code.

What I want to do is Bind the Background Color Value to the KeyColorValue field of my Key object.

Here is my XAML:

              DisplayMemberPath="Name" 
              HorizontalAlignment="Left" 
              Margin="300,103,0,0" 
              VerticalAlignment="Top"
              Width="186" 
              SelectionChanged="roleBoundSelector_SelectionChanged" >
        <ComboBox.ItemContainerStyle>
            <Style TargetType="ComboBoxItem">
                <Setter Property="Background"
                Value = "{Binding Path=KeyColorValue}" />    

(If I put a color in here it works just fine…need to bind to the KeyColorValue of the MyKeys Object.)

Answer 1

Try this inside your style:

<Setter Property="Background">
    <Setter.Value>
        <Binding RelativeSource="{RelativeSource Self}" Path="DataContext.KeyColorValue"/>
    </Setter.Value>
</Setter>

The DataContext of each ComboBoxItem is an object contained in the List that is feeding the ItemsSource of the ComboBox.

Let me know if this was of any help, regards!