private void Button_Click_1(object sender, RoutedEventArgs e)
{
if (SelectedItem != null)
{
var it = SelectedItem;
Attachements.Remove(it);
GAPPSF.Attachement.Manager.Instance.DeleteAttachement(it);
}
}
public void RemoveAttachement(AttachementViewModel attachement)
{
Attachements.Remove(attachement);
_manager.attachements.Remove(attachement.Model);
}