Store the 'current' and 'previous' values in variables of the appropriate type (you didn't indicate any...) and the make the difference.
As about dividing by their time difference (provided your data type is divisible :rolleyes: ), you have to:
- Store 'current' and 'previous' times in
DateTime
objects (use the Now
property) - Store the difference in a
TimeSpan
object. - Use the appropriate property of the
TimeSpan
object (for instance TotalSeconds
) as divisor.