如何删除navicat中的表c＃

Question

我试着让这个表每12小时清空一次

我的代码：

#region Vote System
            if (DateTime.Now.Hour == 12 && DateTime.Now.Minute == 00 && DateTime.Now.Second == 00)
            {
                MySqlCommand cmd = new MySqlCommand(MySqlCommandType.DELETE).Delete("votes", "delete", "1");
                cmd.Execute();

            }

            if (DateTime.Now.Hour == 23 && DateTime.Now.Minute == 59 && DateTime.Now.Second == 40)
            {
                MySqlCommand cmd = new MySqlCommand(MySqlCommandType.DELETE).Delete("votes", "delete", "1");
                cmd.Execute();
            }

            #endregion 

我的控制台没有错误，我不知道为什么这段代码无效