是否有可能日志消息cmd.exe，在C＃/。NET？ [英] Is it possible to log message to cmd.exe in C#/.Net?

问题描述

是否有可能登陆的WinForms应用程序消息的cmd.exe进程启动编程？我试着做各种以下code变化：

Is it possible to log message from WinForms app to cmd.exe process started programmatically? I've tried to do all kinds of variations of following code:

private void button1_Click(object sender, EventArgs e)
{
    Log("Button has been pressed");
}

private void Log(string message)
{
    var process = Process.Start(new ProcessStartInfo("cmd.exe", @"/K ""more""")
    {
        UseShellExecute = false,
        RedirectStandardInput = true,
    });
    process.StandardInput.WriteLine(message);
}

不幸的是，控制台窗口闪烁的第二个一半，仅此而已。

Unfortunately, console window blinks for a half of a second and that's it.

请不要回答我真正想做的事情，因为现在我是否有可能只是好奇：）

Please don't answer what I really want to do, because right now I'm just curious if it's possible :)

推荐答案

您很幸运。我只是解决了这个为code发电机玩具项目，我已经漂浮在这里。

You're in luck. I just solved this for a code generator toy project I had floating around here.

使用 AttachConsole 或 AllocConsole 的Win32 API的可以实现的结果，仅仅使用的System.Console.WriteLine （或阅读，或Error.WriteLine等），就像你通常会。

Using AttachConsole or AllocConsole Win32 API's you can achieve the result, by just using System.Console.WriteLine (or Read, or Error.WriteLine etc) like you normally would.

下面的代码片段计算出，当窗体应用程序从一个控制台窗口中启动，并连接到它的父控制台;如果还是不行，它会创建自己的控制台，记得要保持开放的（所以它不会消​​失之前，用户可以阅读的输出，例如）。

The following snippet figures out when a forms app was started from a Console window, and attaches to it's parent console; If that doesn't work, it will create it's own console, and remember to keep it open (so it doesn't vanish before the user can read the output, for example).

    [DllImport("kernel32.dll")] static extern bool AllocConsole();
    [DllImport("kernel32.dll")] static extern bool AttachConsole(int pw);
    private static bool _hasConsole, _keepConsoleOpen;
    static private void EnsureConsole()
    {
        _hasConsole      =  _hasConsole || AttachConsole(-1);
        _keepConsoleOpen = !_hasConsole || _keepConsoleOpen;
        _hasConsole      =  _hasConsole || AllocConsole();
    }

    [STAThread]
    private static void Main(string[] args)
    {
          EnsureConsole();

          // the usual stuff -- your program

          if (_keepConsoleOpen)
          {
              Console.WriteLine("(press enter)...");
              Console.Read();
          }
    }

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