c# - 如何打印出子进程用 C# 打印的值？

Question

正如这篇文章中所问的，我可以使用 Python 的 subprocess.Popen() 函数来打印运行 ruby​​ 代码的值。

import subprocess
import sys

cmd = ["ruby", "/Users/smcho/Desktop/testit.rb"]
p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
for line in iter(p.stdout.readline, ''):
    print line, 
    sys.stdout.flush() 
p.wait()

我怎样才能用 C# 做同样的事情？如何打印子流程打印出的值？

Answer 1

生成子进程时需要重定向标准输出；MSDN 有一个完整的例子：http: //msdn.microsoft.com/en-us/library/system.diagnostics.processstartinfo.redirectstandardoutput.aspx

（来自 MSDN）：

 // Start the child process.
 Process p = new Process();
 // Redirect the output stream of the child process.
 p.StartInfo.UseShellExecute = false;
 p.StartInfo.RedirectStandardOutput = true;
 p.StartInfo.FileName = "Write500Lines.exe";
 p.Start();
 // Do not wait for the child process to exit before
 // reading to the end of its redirected stream.
 // p.WaitForExit();
 // Read the output stream first and then wait.
 string output = p.StandardOutput.ReadToEnd();
 p.WaitForExit();

Answer 2

ProcessStartInfo psi = new ProcessStartInfo("ruby", "/Users/smcho/Desktop/testit.rb");
psi.RedirectStandardOuput = true;W    
Process proc = new Process(psi);
proc.Start();
StreamReader stdout = proc.StandardOutput;
string line;
while ((line = stdout.ReadLine()) != null)
   Console.WriteLine(line);