CODEWITHSUNDEEP
c#pythonconsoleexeembedding
Shahar Shechter
Shahar Shechter

Reputation: 31

Embedding an exe file in C# console?

I wish to embed an exe file (particularly "python.exe", the interpreter of Python 2.7) in my C# Console Application, meaning I want the user to enter commands, receive the interpreter's output into a string variable and use Console.WriteLine to print that output. My code so far is:

ProcessStartInfo processStartInfo = new ProcessStartInfo("C:/Python27/python.exe");
processStartInfo.RedirectStandardInput = true;
processStartInfo.RedirectStandardOutput = true;
processStartInfo.UseShellExecute = false;

Process process = Process.Start(processStartInfo);

if (process != null)
{
    while (true)
    {
        process.StandardInput.WriteLine(Console.ReadLine());
        process.StandardInput.Close();

        string output = process.StandardOutput.ReadToEnd();
        Console.WriteLine(output);
    }
}

I can write "print 5" and get the correct output, but when writing it again I get the following error:

Cannot write to a closed TextWriter.

I believe this error is because I close the StandardInput, but without that line of code I don't get any output at all. What can I use to send multiple commands to the exe?

Thank you in advance!

Upvotes: 3

Views: 487

Answers (1)

Kilanash
Kilanash

Reputation: 4559

Call process.StandardInput.Flush() instead. Flush makes any buffered TextWriter write all of its input to the destination, which is what's happening here - you're calling Close() which has the side effect of flushing the buffers as well as closing the stream.

See the MSDN documentation for more info.

Upvotes: 1

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