Datastore query projection with datetime returns integer

I have datetime type in my projection and it returns me integer value instead of timestamp value. If I remove the datetime type from projection, I get correct type back. Below is sample query -

    Query query = new Query(historical)
            {
                Filter = filter,
                Projection = { stocksymbol, date },
                DistinctOn = { stocksymbol },
                Order = {
                    { stocksymbol, PropertyOrder.Types.Direction.Descending },
                    { date, PropertyOrder.Types.Direction.Descending }
                        }
            };

            var queryResult = await dataStore.RunQueryAsync(query);

queryResult.Entities.Properties[date] return back Integer value.

I read about similar issue here (https://github.com/googleapis/google-cloud-node/issues/1319) and the workaround given is not working for me.

This is my modified code with the workaround but I still get incorrect date:

var result = new DateTime(Convert.ToInt64(x.Properties[date].IntegerValue.ToString(), 10) / 1000)

Any ideas what I am missing or how do i fix this issue?

[jskeet]

@Thaina: That would only work with an integer number of seconds or milliseconds (we go down to microseconds) - and isn’t available in the frameworks we target. (So it could be in client code, but not in our libraries.)

[jskeet]

@Thaina: But DateTimeOffset.FromUnixTimeSeconds doesn’t exist on every platform that we target, so we just can’t use it.

Likewise, TimeSpan.FromMilliseconds isn’t terribly useful when we have a value in microseconds and we don’t want to lose that precision.

I’m entirely comfortable with the implementation we’ve got, and it’s only an implementation detail anyway.