Question

I know the title might be confusing, but I’m not sure how to word it better….

I’m doing this to get the logs of the current hour:

'TraceSink-'yyyy-MM-dd HH'-Hourly.log'

How can I get the previous hour? i.e.:

'TraceSink-'yyyy-MM-dd (HH-1)'-Hourly.log'

Is there anything possible with time format like that?

EDIT: I don’t have access to the C# code but a exe.config where I can change what goes inside.

Like var on DateTime.ToString(var);

Am I asking too much?

Answer 1

The answer to your question is no.

The format string only defines the format. It does not have the ability to perform calculation on it (and why would it?)