CODEWITHSUNDEEP
wpfstyles
Never
Never

Reputation: 323

StyleSelector and return style from XAML

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.

Upvotes: 4

Views: 14591

Answers (3)

Jiří Skála
Jiří Skála

Reputation: 680

You can add a property to your StyleSelector and then use the property to pass a reference to the Style in XAML.

public class MyStyleSelector : StyleSelector
{
    private Style styleToUse;

    public Style StyleToUse
    {
        get { return styleToUse; }
        set { styleToUse = value; }
    }

    public override Style SelectStyle(object item, DependencyObject container)
    {
        return styleToUse;
    }
}

<Control StyleSelector="{DynamicResource myStyleSelector}">
    <Control.Resources>
        <Style x:Key="myStyle">
        ...
        </Style>
        <local:MyStyleSelector x:Key="myStyleSelector" StyleToUse="{StaticResource myStyle}"/>
    </Control.Resources>
</Control>

Upvotes: 12

Kenn
Kenn

Reputation: 2769

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();
    }
  }
}

Upvotes: 8

Erik Dietrich
Erik Dietrich

Reputation: 6090

If you're just looking for an example, here's a relatively usable one:

http://www.shujaat.net/2010/10/wpf-style-selector-for-items-in.html

If you have more specific questions, I would suggest posting some code/XAML to indicate what you've tried and what problems you're having.

Upvotes: 2

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