Mongodb没有正确存储DateTime

Question

代码是自我解释的。当我从DB检索对象时，DateTime与我插入的对象不同。我想知道如何解决它。

class MyClass
{
    public ObjectId _id;
    public DateTime date;
}

MongoClient client = new MongoClient("mongodb://localhost");
MongoServer server = client.GetServer();

MyClass tmp = new MyClass();
tmp.date = DateTime.Now;

Console.WriteLine(tmp.date); // 11.7. 21:38:18

var coll = server.GetDatabase("test").GetCollection("test");
coll.Insert(tmp);

tmp = server.GetDatabase("test").GetCollection<MyClass>("test").FindOne();

Console.WriteLine(tmp.date); // 11.7. 19:34:46