Question

Does anyone know how to create a wpf Style in code behind, I can t find anything on the web or MSDN docs. I have tried this but it is not working:

Style s = new Style(typeof(TextBlock));
s.RegisterName("Foreground", Brushes.Green);
s.RegisterName("Text", "Green");

breakInfoControl.dataTextBlock.Style = s;

Answer 1

You need to add setters to the style rather than using RegisterName. The following code, in the Window_Loaded event, will create a new TextBlock style which will become the default for all instances of a TextBlock within the Window. If you d rather set it explicitly on one particular TextBlock, you can set the Style property of that control rather than adding the style to the Resources dictionary.

private void Window_Loaded(object sender, RoutedEventArgs e)
{
    Style style = new Style(typeof (TextBlock));
    style.Setters.Add(new Setter(TextBlock.ForegroundProperty, Brushes.Green));
    style.Setters.Add(new Setter(TextBlock.TextProperty, "Green"));
    Resources.Add(typeof (TextBlock), style);
}

Answer 2

This should get you what you need:

Style style = new Style
{
    TargetType = typeof(Control)
};
style.Setters.Add(new Setter(Control.ForegroundProperty, Brushes.Green));
myControl.Style = style;

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