Catch console input-output

Question

I have a console application that reads input from console and writes output to console. I need to write another program that should run the first one, mock the console input for it and grab the output. Can you please provide a way of investigation for this problem?

The (very easy) example of console application code:

string input = Console.ReadLine();
int value = int.Parse(input);
Console.WriteLine(value * value);

Did you tried anything? Show your console application code.. — Soner Gönül, Apr 08 '13 at 10:38
Have you looked at all at the `Process` object? It has plenty of tools to make it easy to read/write from/to the console of a started application. — PhonicUK, Apr 08 '13 at 10:38
Start looking at [this question](http://stackoverflow.com/questions/10380330/capturing-an-c-sharp-executable-output-from-another-c-sharp-program) — Steve, Apr 08 '13 at 10:42
This question should put you in the right direction http://stackoverflow.com/questions/4291912/process-start-how-to-get-the-output — Surya Pratap, Apr 08 '13 at 10:46

score 2 · Accepted Answer · answered Apr 08 '13 at 10:47

You can create the new Process and assign it's StandardInput and StandardOutput properties.

ProcessStartInfo processStartInfo = 
  new ProcessStartInfo(executableName, executableParameter);
processStartInfo.UseShellExecute = false;
processStartInfo.ErrorDialog = false;
processStartInfo.RedirectStandardError = true;
processStartInfo.RedirectStandardInput = true;
processStartInfo.RedirectStandardOutput = true;
Process process = new Process();
process.StartInfo = processStartInfo;
bool processStarted = process.Start();
StreamWriter inputWriter = process.StandardInput;
StreamReader outputReader = process.StandardOutput;
StreamReader errorReader = process.StandardError;
//Write and read process console using inputWriter and outputReader.
process.WaitForExit();

Catch console input-output

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