Enum’s and MarkupExtension

Here is quick sample to get all the values from an enum using MarkupExtension. This returns a Dictionary

 public class EnumValuesExtension : MarkupExtension
    {
        public string EnumName { get; set; }

        public override object ProvideValue(IServiceProvider serviceProvider)
        {
            IXamlTypeResolver xamlResolver = serviceProvider.GetService(typeof(IXamlTypeResolver)) as IXamlTypeResolver;
            Type t = xamlResolver.Resolve(EnumName);
            return t.GetFields().Where(field => field.IsLiteral).ToDictionary(x => (int)x.GetValue(null), x => x.Name);
        }
    }

If we have a enum like below

 public enum Days
    {
        Sat = 1, Sun, Mon, Tue, Wed, Thu, Fri
    }

We can use it in xaml like this. ‘local’ is the xmlns declaration pointing to the namespace

 <ComboBox Width=”150″ Height=”25″ DisplayMemberPath=”Value”
                  ItemsSource=”{local:EnumValues EnumName=’local:Days’}”/>

Advertisement