private static void OnViewModelPropertyChanging(object sender, PropertyChangingEventArgs e)
{
var viewModel = (IViewModel)sender;
object propertyValue = null;
if (!string.IsNullOrEmpty(e.PropertyName))
{
PropertyHelper.TryGetPropertyValue(viewModel, e.PropertyName, out propertyValue);
}
AuditingManager.OnPropertyChanging(viewModel, e.PropertyName, propertyValue);
}