C# LINQ date filter on string field

I was dealing with something like this yesterday. Tried a whole range of things, like converting the DateTime to Ticks, new Dates and other things. I ended up just using a combination of

[BsonDateTimeOptions(Kind = DateTimeKind.Local)]

above the property in the class and it worked like normal in the Linq.

_collection.Find(ltr => ltr.MailDetails[0].ReceivedDate >= strtDte && ltr.MailDetails[0].ReceivedDate <= endDte).ToList();

strtDte and endDte are C# DateTime objects.

Hope this helps.