Question

I created a style in XAML, How Can I return this style in style selector (code)?

I created style in XAML and I want to only return the style which is declared in XAML.

Answer 1

You need to access the XAML resource where you stored the style. Generally they way to do this is store it in a seperate resources file. Then you need to access the URI of that XAML file as a ResourceDictionary object. Here is an example where I use a converter to decide which style an element will get.

namespace Shared.Converters
{
  public class SaveStatusConverter : IValueConverter
  {

    public object Convert(object value, System.Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {

      bool? saveState = (bool?)value;
      Uri resourceLocater = new Uri("/Shared;component/Styles.xaml", System.UriKind.Relative);
      ResourceDictionary resourceDictionary = (ResourceDictionary)Application.LoadComponent(resourceLocater);
      if (saveState == true)
        return resourceDictionary["GreenDot"] as Style;
      if (saveState == false)
        return resourceDictionary["RedDot"] as Style;
      return resourceDictionary["GrayDot"] as Style;

    }

    public object ConvertBack(object value, System.Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
      throw new System.NotImplementedException();
    }
  }
}