start date from end date

[MARTINRODDY]

how can i subtract one date from another to get the deifference in seconds.

e.g.
start date - end date

Any help appreciated

Martin

 

[BobbaFet]

Convert the start date and the end date to seconds and then substract them from eachother. You could do this by making seperate field for ady month and year and then adding calculate what they are in seconds add them up, and then subtract them...

Cood luck,

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[CharlesWright]

Here is some code that will do that conversion.

function SecondsBetweenDates(const StartDate, StopDate : TDateTime) : cardinal;
const
SecondsPerDay = 60 * 60 * 24;
RoundFactor = 0.5;
var
DateDiff : TDateTime;
begin
DateDiff := StopDate - StartDate;
result := trunc(DateDiff * SecondsPerDay + RoundFactor);
end;