how to switch log4net multiple log files using C# code? - log4net

Question

I'm using log4net, I would like to have 2 logs,
- BasketballCustomer.log, for all Customers that plays Basketball;
- ChessCustomer.log, for all Customers that plays Chess.
, while for each customer, whether he/she plays Basketball or Chess, is only known until runtime.
I would like to have each log configured separately, about log file name, size, number, log level, etc.
Also, I'd prefer such set up done by C# code, not config file.
How could I do that?
I tried search on net, there are some articles but none meet exactly my requirements
- Log4Net and multiple log files talked about multiple log files but it does not toggle during runtime;
- Configure Log4net to write to multiple files is similiar but it's done in config file....
Please kindly suggest, many thanks!

Answer 1

You can do this by using an environment variable in the log4net.config and then set the value of the environment variable through the C# code
So somewhere in your C# class, do something like:
Environment.SetEnvironmentVariable("log_file_name", "MyLogFileName");
And then in the log4net.config that is used, specify the value to the name of the environment variable. The syntax would be something like this:
<param name="File" value="${log_file_name}".log/>