void RaiseStatus(JsStatus status)
{
if (Status != null)
Status(this, status);
}
void OnStatus(object sender, JsStatus e)
{
SelectedItemsJson = JsonConvert.SerializeObject(e.Selected);
Status = new Status()
{
Total = e.Total,
Completed = e.Completed,
Selected = e.Selected.Count(),
};
}