public void SaveState()
{
var list = new List<MBall>();
foreach (var item in bouncingBalls)
{
list.Add(new MBall() { dx = item.dx, dy = item.dy, radius = item.radius, x = item.X, y = item.Y });
}
mem = new Memento(list);
}
private void OpenButton_Click(object sender, EventArgs e)
{
openFileDialog1.Filter = "XML files | *.xml | JSON files | *.json | CSV files | *.csv | YAML files | *.yaml ";
if (openFileDialog1.ShowDialog() != DialogResult.OK) return;
string ext = openFileDialog1.FileName.Substring(openFileDialog1.FileName.LastIndexOf('.') + 1);
Creator cr = new Creator();
cr.Format(ext.ToUpper());
mem = new Memento(cr.From(openFileDialog1.FileName);
LoadState();
timer1.Start();
}
