c# Quick way to undef all parameters

Question

I have a C# winform app which is doing a lot of calculation. there is a "run" button to trigger the process. I would like to be able to "re-trigger or re-run or re-submit" the information without having to restart the program. Problem is I have a lot of variables that need to be reset. Is there a way to undef (reset) all parameters?

private Double jtime, jendtime, jebegintime, javerage, .... on and on