Question

我致力于winform的应用程序，该应用程序通过选择日期，通过dateTimePicker1接收数据，并在datagridview中显示数据，在显示所有数据之后，应用程序将这些数据导出到excel。我的问题是我无法弄清楚如何创建列解析器（在MySql中为dmeasurement1）并将其绑定到datetime监视程序，并在sql查询中完成所有操作。

String userInput = Console.ReadLine();
        DateTime userDate = DateTime.Parse(userInput);

        string query = "SELECT * from EX_S[enter image description here][1]UM WHERE dmeasurement1 between '" + dateTimePicker2.Value.DateParse  + "'";

Answer 1

string query = "SELECT * FROM EX_SUM WHERE STR_TO_DATE(dmeasurement1, '%d.%m.%Y') BETWEEN '" + dateTimePicker1.Value.Date.ToString("yyyy/MM/dd").Replace("/", "-") + "' AND '" + dateTimePicker2.Value.Date.ToString("yyyy/MM/dd").Replace("/", "-") + " '"; //yyyy - MM - dd

将varchar转换为datetimepicker C＃

从db mysql解析，parseexact字符串（varchar）到SQL查询C＃中的datetimepicker

1 个答案: