使用c＃driver从mongo collection获取DateTime

Question

I have the following object:

public class QueueItem
{
    public long _id { get; set; }
    public SiteMapRequestState State { get; set; }
    public int WorkerId { get; set; }
    public DateTime QueuedTime { get; set; }
    public DateTime StartWorkTime { get; set; }
}

When I save the object to mongo the date appear right (the DateTime fields contains the correct date that I inserted). However when i pull this object I get different time (-3 hours).

For example: I save the object with StartWorkTime = 6/26/2012 10:00:00 AM , then when getting the object from the collection StartWorkTime equals to 6/26/2012 7:00:00 AM . This make the calculation of process time wrong.

I'm using the latest c# driver (1.4.2.4500) and running both code and the mongo server on the same machine.

What can cause the difference?

Thanks!

Answer 1

After digging a bit i found this posts: http://alexmg.com/post/2011/09/30/DateTime-precision-with-MongoDB-and-the-C-Driver.aspx

http://www.mongodb.org/display/DOCS/CSharp+Driver+Serialization+Tutorial#CSharpDriverSerializationTutorial-DateTimeSerializationOptions

I needed to mark the DateTime property with [BsonDateTimeOptions(Kind = DateTimeKind.Local)] attribute

Answer 2

I had this issue once. Be sure to also specify the DateTimeKind parameter to DateTimeKind.Utc

Hope that helped.