Binding a control to color in Win8 app store

Question

I have a LayoutAwarePage with a property of type Color - "MyColor". I added a simple control to the page like a Rectangle or a TextBox, and bounded the background of the control to MyColor. I set MyColor to black, white, red etc' - none of this works. The controls remain black no matter what I did. How to solve this?

I followed your advice and it worked, thanks! I also tried to add the next style to the page:

<Grid.Resources>
            <ResourceDictionary>
                <Style TargetType="a:MyTextBlock">
                    <Setter Property="Background" Value="{Binding TextBlockBackgroundColor}"></Setter>
                   <Setter Property="BorderBrush" Value="{Binding TextBlockBorderColor}"></Setter>
                   <Setter Property="Width" Value="200"></Setter>
                   <Setter Property="IsReadOnly" Value="False"></Setter>
                   <Setter  Property="BorderBrush" Value="3" ></Setter>
               </Style>
           </ResourceDictionary>
      </Grid.Resources>

And now I can't see the controls of the type MyTextBlock...

Why is that?

score 1 · Accepted Answer · answered Aug 14 '13 at 18:33

1

You have to bind Fill property of Rectangle with SolidColorBrush rather than Color. See the below code.

viewModel.cs

public class viewModel
{
    public Color color { get; set; }
    public viewModel(Color _color)
    {
        color = _color;
    }
    public SolidColorBrush MyColor
    {
        get
        {
            return new SolidColorBrush(color);
        }
    }
}

BlankPage1.xaml.cs

public BlankPage1()
{
    this.InitializeComponent();
    DataContext = new viewModel(Colors.Red);
}

XAML

<Rectangle Height="100" Width="100" Fill="{Binding MyColor}" />

answered Aug 14 '13 at 18:33

Farhan Ghumra

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Ok. But why do I have to do this? Why can't I use Color and must use SolidColorBrush? – Tal Malaki Aug 14 '13 at 18:54
Because `Fill`, `Background`, `Foreground`, `Stroke` properties are type of `SolidColorBrush`, not `Color`. – Farhan Ghumra Aug 14 '13 at 19:48
Native `TextBlock` don't have `Background` & `BorderBrush` property. Can you please share code of `MyTextBlock` ? – Farhan Ghumra Aug 14 '13 at 20:15
Do you want to do like [this](http://stackoverflow.com/questions/6084091/binding-style-setter-to-a-public-property) ? – Farhan Ghumra Aug 14 '13 at 20:25
I derived from TextBox and called it MyTextBlock... :) – Tal Malaki Aug 14 '13 at 20:46
No, i want to understand why MyTextBlock is not shown and fix this problem. Can you please help me with that? – Tal Malaki Aug 15 '13 at 08:41

Binding a control to color in Win8 app store

1 Answers1