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mchSamples-MAUI/ch08_HotStuff/DragNDrop/ExchangeNounoursPage.xaml.cs

40 lines
1.2 KiB

using System.Collections.ObjectModel;
using DragNDrop.Model;
namespace DragNDrop;
public partial class ExchangeNounoursPage : ContentPage
{
public ObservableCollection<Nounours> FirstCollection { get; set; } = new ObservableCollection<Nounours>()
{
new Nounours(42, "Chewbacca"),
new Nounours(43, "Yoda"),
new Nounours(44, "Ewok"),
new Nounours(45, "Jabba the Hutt"),
new Nounours(666, "Chucky")
};
public ObservableCollection<Nounours> SecondCollection { get; set; } = new ObservableCollection<Nounours>();
public ExchangeNounoursPage()
{
InitializeComponent();
BindingContext = this;
}
private void OnDragStarting(object sender, DragStartingEventArgs e)
{
e.Data.Properties["value"] = (sender as Element)?.BindingContext;
}
private void OnDrop(object sender, DropEventArgs e)
{
var collection = ((sender as Element)?.Parent as FlexLayout).GetPropertyIfSet<ObservableCollection<Nounours>>(BindableLayout.ItemsSourceProperty, null);
if (e.Data.Properties["value"] is Nounours nounours)
{
FirstCollection.Remove(nounours);
SecondCollection.Remove(nounours);
collection.Add(nounours);
}
}
}