Add a confirm dialog box before deleting an annotation by drag and drop. Now the UserControlClose is a generic confirm dialog box sending a ConfirmYesOrNo Event.
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Windows;
namespace FingersDance
{
/// <summary>
/// Interaction logic for App.xaml
/// </summary>
public partial class App : Application
{
}
}