You can add the following to your exe’s .config file.
<?xml version="1.0"?>
<configuration>
<system.diagnostics>
<trace autoflush="true">
<listeners>
<add name="logListener" type="System.Diagnostics.TextWriterTraceListener" initializeData="cat.log" />
<add name="consoleListener" type="System.Diagnostics.ConsoleTraceListener"/>
</listeners>
</trace>
</system.diagnostics>
</configuration>
I included the TextWriter as well, in case you’re interested in logging to a file.