How to spawn a process and capture its STDOUT in .NET? [duplicate]

Answer 1

Redirecting the stream is asynchronous and will potentially continue after the process has terminated. It is mentioned by Umar to cancel after process termination process.CancelOutputRead(). However that has data loss potential.

This is working reliably for me:

process.WaitForExit(...);
...
while (process.StandardOutput.EndOfStream == false)
{
    Thread.Sleep(100);
}

I didn't try this approach but I like the suggestion from Sly:

if (process.WaitForExit(timeout))
{
    process.WaitForExit();
}