BindingSource.AddingNew事件给新增数据设置初始值

private void tableBindingSource_AddingNew(object sender, AddingNewEventArgs e)
{
              BindingSource bs = (BindingSource)sender;
             DataView view = (DataView)bs.List;
             DataRowView row = view.AddNew();
             row["id"] = Guid.NewGuid();
             if (bs.Count == 1)
             {
                 bs.EndEdit();
             }
             bs.MoveLast();
             e.NewObject = row;
} 
//不过有个bug，当表为空的时候需要endedit一下下:{