GPAL Fluent: High-level fluent C# API

//The handlers are given before Launch and called once per line as the process writes it, so a long run reports as it goes rather than all at once at the end. The second launcher is held rather than chained because the workflow starts it, does something else, and then decides whether to wait or to stop it. A chain that launches and waits in one breath cannot do that.

// read the output as it comes, then wait for it to finish

GPAL.Launcher

.WithExecutable(@"C:scriptsprocess.exe")

.WithArgument("--input=data.csv")

.WithOutputTo(line => GPAL.PublishSimpleEvent(GPALEventType.NOTICE, $"OUT [{line}]"))

.WithErrorTo(line => GPAL.PublishSimpleEvent(GPALEventType.CAUTION, $"ERR [{line}]"))

.Launch()

.WaitForExit(30_000); // 30 seconds

// held, so the workflow decides when it starts and when it stops

Launcher report = (Launcher)GPAL.Launcher

.WithExecutable(@"C: ools eport.exe")

.ToGPALObject();

report.Launch();

// the workflow gets on with something else while it runs

if (true == report.IsRunning())

report.WaitForExit(60_000);

// KillTree takes the children with it, which is what a process that spawned others needs

report.KillTree();