//父进程发送消息

Process process = new Process();

process.StartInfo.FileName = @"M:\ABCSolution\Child\Child\bin\Debug\Child.exe";

//创建匿名管道实例

using (AnonymousPipeServerStream stream =

    new AnonymousPipeServerStream(PipeDirection.Out, System.IO.HandleInheritability.Inheritable))

{

    //将句柄传递给子进程

    process.StartInfo.Arguments = stream.GetClientHandleAsString();

    process.StartInfo.UseShellExecute = false;

    process.Start();

    //销毁子进程的客户端句柄

    stream.DisposeLocalCopyOfClientHandle();

    //向匿名管道中写入内容

    using (StreamWriter sw = new StreamWriter(stream))

    {

        sw.AutoFlush = true;

        sw.WriteLine(Console.ReadLine());

    }

}

process.WaitForExit();

process.Close();

//子进程读取消息

//使用匿名管道接收内容

using (StreamReader sr = new StreamReader(new AnonymousPipeClientStream(PipeDirection.In, args[])))

{

    string line;

    while ((line = sr.ReadLine()) != null)

    {

        Console.WriteLine("Echo:{0}", line);

    }

}