DataTemplateSelector issue

Question

I'm trying to use a DataTemplateSelector so I can have two different types of content in the same list. I've got everything set up, but the below code won't compile. I get this error:

Error 1 'MyNamespace.SlideItemDataTemplateSelector.SelectTemplate(object, Windows.UI.Xaml.DependencyObject)': cannot override inherited member 'Windows.UI.Xaml.Controls.DataTemplateSelector.SelectTemplate(object, Windows.UI.Xaml.DependencyObject)' because it is not marked virtual, abstract, or override

public class SlideItemDataTemplateSelector : DataTemplateSelector
    {
        public DataTemplate ImageTemplate { get; set; }
        public DataTemplate VideoTemplate { get; set; }

        public override DataTemplate SelectTemplate(object item, DependencyObject container)
        {
            SlideItem slide = (SlideItem)item;

            if (slide.Type == SlideType.Video)
                return this.VideoTemplate;

            return this.ImageTemplate;
        }
    }

I'm at a loss. I've tried everything I can think off. The whole point of the DataTemplateSelector is to override the SelectTemplate method, but for some reason I'm not able to do that. Perhaps there's something simple I'm missing in my code?

Answer 1

Hi,

You have to override SelectTemplateCore method. Here is a sample

http://leeontech.wordpress.com/2012/03/03/using-datatemplateselector-in-metro-style-app/

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http://leeontech.wordpress.com/

Answer 2

Thanks Lee. That did the trick.