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using System;
namespace Xamarin.Forms
{
public abstract class DataTemplateSelector : DataTemplate
{
public DataTemplate SelectTemplate(object item, BindableObject container)
{
DataTemplate result = OnSelectTemplate(item, container);
if (result is DataTemplateSelector)
throw new NotSupportedException("DataTemplateSelector.OnSelectTemplate must not return another DataTemplateSelector");
return result;
}
protected abstract DataTemplate OnSelectTemplate(object item, BindableObject container);
}
}
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