C# timer

[uzeren]

Hello, I'm doing a windows form project, in this project, when I subtract the entry date from the end date, I reflect the result to a column named remaining usage. What I want in the database is that this remaining usage decreases by 1 every 24 hours

 

[Skydiver]

Why would the number reduce by every 24 hours of the difference between entry date and end date does not change?

 

[cjard]

You don't really need to do anything once you have declared an end date; the advance of time does the decrement for you

Today: Monday Noon
Expiry Date: Friday Noon
Days Left: 4.0

Wait some..

Today: Tuesday Noon
Expiry Date: Friday Noon
Days Left: 3

Just do the days diff calc every time you want to know the remaining usage

 

[Skydiver]

Ah so Entry Date is not actually a fixed date, but rather meant to be the current date...