Итак, насколько я знаю, нет способа достичь этого без туннелирования данных через ваше приложение.
Код для этого следующий:
using System;
using System.Diagnostics;
using System.IO;
using System.Threading;
namespace TestApp
{
internal static class Program
{
[MTAThread]
public static void Main(string[] args)
{
const string fileName = @"..\..\..\ChildConsoleApp\bin\Debug\ChildConsoleApp.exe";
// Fires up a new process to run inside this one
var process = Process.Start(new ProcessStartInfo
{
UseShellExecute = false,
RedirectStandardError = true,
RedirectStandardInput = true,
RedirectStandardOutput = true,
FileName = fileName
});
// Depending on your application you may either prioritize the IO or the exact opposite
const ThreadPriority ioPriority = ThreadPriority.Highest;
var outputThread = new Thread(outputReader) { Name = "ChildIO Output", Priority = ioPriority};
var errorThread = new Thread(errorReader) { Name = "ChildIO Error", Priority = ioPriority };
var inputThread = new Thread(inputReader) { Name = "ChildIO Input", Priority = ioPriority };
// Set as background threads (will automatically stop when application ends)
outputThread.IsBackground = errorThread.IsBackground
= inputThread.IsBackground = true;
// Start the IO threads
outputThread.Start(process);
errorThread.Start(process);
inputThread.Start(process);
// Demonstrate that the host app can be written to by the application
process.StandardInput.WriteLine("Message from host");
// Signal to end the application
ManualResetEvent stopApp = new ManualResetEvent(false);
// Enables the exited event and set the stopApp signal on exited
process.EnableRaisingEvents = true;
process.Exited += (e, sender) => { stopApp.Set(); };
// Wait for the child app to stop
stopApp.WaitOne();
// Write some nice output for now?
Console.WriteLine();
Console.Write("Process ended... shutting down host");
Thread.Sleep(1000);
}
/// <summary>
/// Continuously copies data from one stream to the other.
/// </summary>
/// <param name="instream">The input stream.</param>
/// <param name="outstream">The output stream.</param>
private static void passThrough(Stream instream, Stream outstream)
{
byte[] buffer = new byte[4096];
while (true)
{
int len;
while ((len = instream.Read(buffer, 0, buffer.Length)) > 0)
{
outstream.Write(buffer, 0, len);
outstream.Flush();
}
}
}
private static void outputReader(object p)
{
var process = (Process)p;
// Pass the standard output of the child to our standard output
passThrough(process.StandardOutput.BaseStream, Console.OpenStandardOutput());
}
private static void errorReader(object p)
{
var process = (Process)p;
// Pass the standard error of the child to our standard error
passThrough(process.StandardError.BaseStream, Console.OpenStandardError());
}
private static void inputReader(object p)
{
var process = (Process)p;
// Pass our standard input into the standard input of the child
passThrough(Console.OpenStandardInput(), process.StandardInput.BaseStream);
}
}
}
Код моего дочернего приложения выглядит следующим образом:
using System;
namespace ChildConsoleApp
{
internal static class Program
{
public static void Main()
{
Console.WriteLine("Hi");
string text; // Echo all input
while ((text = Console.ReadLine()) != "stop")
Console.WriteLine("Echo: " + text);
Console.WriteLine("Stopped.");
}
}
}
Как всегда, это имеет некоторые накладные расходы, хотя, вероятно, незначительно в любом нетривиальном приложении, которое вы оборачиваете.
Если вы отправляете много данных и хотите избежать очистки больше, чем необходимо, вы можете увеличить размер буфера с 4 КБ до любого размера, который вам подходит.