private void OnContextDisposing(object sender, EventArgs e)
{
var context = (EditingContext)sender;
Debug.Assert(_context == context, "incorrect context");
if (_selectionContainer != null)
{
_selectionContainer.Dispose();
_selectionContainer = null;
}
if (_viewModel != null)
{
_viewModel.Dispose();
_viewModel = null;
}
context.Items.SetValue(new MappingDetailsInfo());
context.Disposing -= OnContextDisposing;
}
