将日期字符串转换为 SQL 可读的日期格式

Question

我正在尝试将日期字符串Oct 21 2014 1:00 AM为2014-10-21 01:00:00或 SQL Server 可以理解的内容。

Answer 1

Use DateTime.TryParse

var dateString = "Oct 21 2014 1:00 AM";
DateTime result;
DateTime.TryParse(dateString, out result);
var sqlDate = result.ToString("yyyy-MM-dd HH:mm:ss");

Answer 2

I'd argue that if you're using ADO.NET to communicate with your SQL Server, you shouldn't use a formatted date string as a query parameter. You should instead use a DateTime object. You can get it from your string by using either the DateTime.Parse or DateTime.TryParse methods:

DateTime date = DateTime.Parse("Oct 21 2014 1:00 AM"); // Use this as your query parameter.

However if you do decide to go with using a formatted string, the simplest way would be first parse it to as shown above, then you can use ToString with a format string overload, to format your date as you want.

To get your example format:

DateTime date = DateTime.Parse("Oct 21 2014 1:00 AM");
string formatted = DateTime.ToString("yyyy-MM-dd hh:mm:ss"); // 2014-10-21 01:00:00

Answer 3

Please see answer here.

Converting a String to DateTime

DateTime.ParseExact may work for you to convert in DateTime and then you can use ToString(<format>) with format to convert it in required string.