void OnPropertyValueChanged(object s, System.Windows.Forms.PropertyValueChangedEventArgs e)
{
PropertyValueChangedEventArgs args = new PropertyValueChangedEventArgs(e.ChangedItem, old);
foreach (PropertyValueChangedHandler i in propertyValueChanged)
i(this, args);
}
void properties_PropertyValueChanged(object sender, PropertyValueChangedEventArgs e)
{
IEnumerable<object> selected = Properties.SelectedObjects;
PropertyInfo property = selected.First().GetType().GetProperty(e.ChangedItem.PropertyDescriptor.Name);
EditStack edits = (EditStack)Properties.Tag;
edits.Did(EditList.New(selected.Select(i => new PropertyEdit(i, property, property.GetValue(i, null), e.OldValues[i]))));
}