Question

I’m attempting to use a double to represent a bit of a dual-value type in a database that must sometimes accept two values, and sometimes accept only one (int).

So the field is a float in the database, and in my C# code, it is a double (since mapping it via EF makes it a double for some reason… )

So basically what I want to do .. let’s say 2.5 is the value. I want to separate that out into 2, and 5. Is there any implicit way to go about this?

Answer 1

Like this:

int intPart = (int)value;
double fractionalPart = value - intPart;

If you want fractionalPart to be an int, you can multiply it by 10ⁿ, where n is the number of digits you want, and cast to int.
However, beware of precision loss.

However, this is extremely poor design; you should probably make two fields.

SQL Server’s float type is an 8-byte floating-point value, equivalent to C#’s double.