c#中的dateTimePicker1.Value.ToString("yyyy-MM-dd");
对应SQL server的是convert(char(10),oper_date,121) between 'start_date' and 'end_date'
c#中的dateTimePicker1.Value.ToString("yyyy-MM-dd");
对应SQL server的是convert(char(10),oper_date,121) between 'start_date' and 'end_date'