protected virtual string OnSelectTemplateKeyCore(object dataContext, UIElement owner)
{
if (m_args is null)
{
m_args = new SelectTemplateEventArgs();
}
var args = m_args;
args.TemplateKey = null;
args.DataContext = dataContext;
args.Owner = owner;
SelectTemplateKey?.Invoke(this, args);
var templateKey = args.TemplateKey;
if (string.IsNullOrEmpty(templateKey))
{
throw new InvalidOperationException("Please provide a valid template identifier in the handler for the SelectTemplateKey event.");
}
return(templateKey);
}
private void OnSelectTemplateKeyPhased(RecyclingElementFactory sender, SelectTemplateEventArgs args)
{
args.TemplateKey = args.DataContext is Recipe ? "RepeaterItemTemplatePhased" : "RepeaterGroupTemplatePhased";
}
private void OnSelectTemplateKey(RecyclingElementFactory sender, SelectTemplateEventArgs args)
{
args.TemplateKey = (int.Parse(args.DataContext.ToString()) % 2 == 0) ? "even" : "odd";
}
private void GridViewGenerator_SelectTemplateKey(RecyclingViewGenerator sender, Microsoft.UI.Xaml.Controls.SelectTemplateEventArgs args)
{
args.TemplateKey = ((SampleData)args.DataContext).Value >= 200 ? nameof(this.EllipseItem) : nameof(this.RectangleItem);
}