CODEWITHSUNDEEP
c#.netprocess
Colonel Panic
Colonel Panic

Reputation: 137492

Print output as it goes with Process

I found some code like this. It runs a process then prints what it wrote to standard output. The problem is, that it doesn't print anything until the process has exited which might take a very long time (or not at all). Thus, I'd rather print the output AS IT GOES. How can I do that?

var startInfo = new ProcessStartInfo("cmd", "/c sleepy.bat")
    {RedirectStandardOutput = true, UseShellExecute = false, CreateNoWindow = true };
var p = new Process(){StartInfo = startInfo};
p.Start();
string output = p.StandardOutput.ReadToEnd();
Console.WriteLine(output);

Where sleepy.bat could be

echo "About to execute really slow query.."
sleep 20
echo "Finished!"

Upvotes: 2

Views: 103

Answers (1)

alex
alex

Reputation: 12654

Try using p.StandardOutput.BeginOutputReadLine(). You will receive output as it goes from the process in OutputDataReceived event.

For extended example, take a look at MSDN article.

Upvotes: 2

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