You should change your post
class to have one property:
public DateTimeOffset Published { get; set; }
Then when you read from the database (assuming you have datetime
and varchar
types in your database):
DateTime utc = DateTime.SpecifyKind(
(DateTime) reader["PubDateUTC"], DateTimeKind.Utc);
TimeSpan offset = TimeSpan.Parse(
((string) reader["PubDateUTCOffset"]).Replace("+", ""))
post.Published = new DateTimeOffset(utc).ToOffset(offset);
Then when you need to consume it, you have all of the options of a full DateTimeOffset
:
DateTime local = post.Published.DateTime; // with your offset applied
DateTime utc = post.Published.UtcDateTime; // the original utc value
string s = post.Published.ToString("o"); // 2011-08-04T18:02:50.0000000+08:00