调整时区-将XML DateTime转换为SQL DateTime

Question

We are using TypedDataSet in our application. Data is passed to procedure in form of XML for insert/update.

Now after populating DE with data, datetime remains the same though timezone information is added as below.

Date in DB: 2009-10-29 18:52:53.43 Date in XML: 2009-10-29T18:52:53.43-05:00

Now when I am trying to convert below XML to SQL DateTime it is adjusting 5 hours and I am getting

2009-10-29 23:52:53.430 as the final output, which is wrong. Need to find a way to extract datetime from below XML snippet ignoring timezone.

I have XML in following format, with timezone difference -05.00

<Order>
   <EnteredDateTime>2009-10-29T18:52:53.43-05:00</EnteredDateTime>
</Order>

Answer 1

First convert into typed xsd date time and then use the value method to convert that value to a sql datetime.

select convert(xml, '<DateTimeWithTimeZone>2012-09-15T16:08:14.787-05:00</DateTimeWithTimeZone>').value('xs:dateTime(/DateTimeWithTimeZone[1])', 'datetime')

Convert datetime with time zone to SQL datetime

Answer 2

2009-10-29 18:52:53.43 is not the same time as 2009-10-29T18:52:53.43-05:00. It's the first step that is incorrect. The conversion from XML to SQL DateTime is correct.

ISO 8601

Answer 3

sorry for simply forwarding with an external link, but i found this resource useful recently and always favour authoritative info.

Coding Best Practices Using DateTime in the .NET Framework