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我正在尝试将信息从子进程(即管道)传递到其父进程,此时它只是一个表单。当我的命名管道是独立的而不是子进程时,我已经让它们在彼此之间工作,但是当我尝试将 pipeServer 用作子进程时,它(子 pipeserver 进程)启动然后关闭,我不知道出为什么。即使我将它重定向到我的调试,它也不会产生任何输出。

在收到来自 pipeClient 的 3 条消息后,我的管道服务器应该关闭。目前,它似乎在被调用时开始,然后在它应该等待接收来自管道客户端的消息时自动关闭几秒钟。

任何和所有的帮助/方向表示赞赏。

这是我的代码:

从表单调用流程

private void pipeB_Button_Click(object sender, EventArgs e)
        {
            using (Process process = new Process())
            {
                process.StartInfo.FileName = @"\\Mac\Home\Desktop\myPathName\TestNamedPipeB\TestNamedPipeB\bin\Debug\TestNamedPipeB.exe";
                process.StartInfo.UseShellExecute = false; // needed somehow
                //process.StartInfo.RedirectStandardInput = true;
                process.StartInfo.RedirectStandardOutput = true;
                process.StartInfo.RedirectStandardError = true;

                process.Start(); // this is where it is starting and closing.

                process.WaitForExit();

                StreamReader reader = process.StandardOutput; 
                string s = process.StandardOutput.ReadToEnd();
                Debug.WriteLine("s: " + s);

                string output = reader.ReadToEnd(); // used

                pipeConversation.Append(output);
                Debug.WriteLine("pipeConversation: " + pipeConversation.ToString());

            }
        }

我的服务器管道代码

namespace TestNamedPipeB
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.SetWindowSize(100, 15);

            StartServer();
        }
        static void StartServer()
        {
            
            var server = new NamedPipeServerStream("test-pipe");

            if (server.IsConnected == false)
            {
                Console.WriteLine("Currently waiting for a client to connect...");
            }

            server.WaitForConnection();
            
            StreamReader reader = new StreamReader(server);
            StreamWriter writer = new StreamWriter(server);

            Console.Write("A client has connected, awaiting greeting from client... \n");

            string emptyArgsString = "PipeA sent an empty message. PipeB (this program) is assuming pipeA has no arugments and is closing";

            int readerCounter = 0;
            int readerMaxInt = 3; // edit me to an int greather than 1 if you want to test

            while (readerCounter < readerMaxInt) 
            {
                var line = reader.ReadLine();
                if (line == null)
                {
                    Console.WriteLine(emptyArgsString);
                    Debug.WriteLine(emptyArgsString);
                    MessageBox.Show(emptyArgsString, "M3dida", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    break;
                }
                
                Console.WriteLine("PipeA said: " + line);
                Debug.WriteLine("PipeA said: " + line);
                readerCounter++;
                if (readerMaxInt > 1)
                {
                    writer.WriteLine(Console.ReadLine()); //<-- needed to send a response back if sending multiple messages
                    writer.Flush(); // onus changes to other pipe
                }
            }
        }
    }
}
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1 回答 1

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所以这可能是我遇到过的最糟糕的虫子,而且脏得令人难以置信,以至于生锈的钉子都可以赚到钱。我也不是受过正式培训的程序员,所以要考虑到这一点。

这一行:Console.SetWindowSize(100, 15);导致了这个错误。一旦我从子进程中删除它,一切都会再次运行。我不知道为什么。

于 2020-07-31T00:07:36.510 回答