.NET Tracing

For an overview about .NET tracing, see https://docs.microsoft.com/en-us/dotnet/framework/debug-trace-profile/tracing-and-instrumenting-applications

For tracing of ASP.NET on IIS, see https://msdn.microsoft.com/en-us/library/b0ectfxd.aspx?f=255&MSPPError=-2147217396

The sample code covers the basics of these cases.