big issue in converting string to datetime using linq-to-entities

Question

How can I convert the string to datetime using linq to entities ....

I have got the below query, where the visit_date column datatype is string...

Answer 1

Because DateTime and DateTimeOffset are structs, they are not intrinsically nullable. When you need nullability, there are two ways around this:

1. Use a Nullable type (i.e., DateTime? or DateTimeOffset?).
2. Use the static field DateTime.MinValue or DateTimeOffset.MinValue (the default values for these types)