C# 读取运行进程的输出为空

我试图运行一个编译应用程序的进程（一个旧的基本编译器）。我故意在我试图编译的应用程序中出现错误，以查看如何读取可能返回的任何输出消息，但我在e.Data中只看到null。有人能告诉我，我下面的代码中是否有试图读取输出或错误数据的错误

private static void RunProcess(string filename, string args)
{
    try
    {
        var processStartInfo = new ProcessStartInfo();

        processStartInfo.FileName = filename;

        processStartInfo.Arguments = args;

        processStartInfo.UseShellExecute = false;

        processStartInfo.RedirectStandardOutput = true;

        processStartInfo.RedirectStandardError = true;

        var result = string.Empty;

        using (Process process = Process.Start(processStartInfo))
        {
            process.ErrorDataReceived += Process_ErrorDataReceived;

            process.OutputDataReceived += Process_OutputDataReceived;

            process.BeginOutputReadLine();

            process.BeginErrorReadLine();

            process.WaitForExit();

            Console.Write("Completed process with an exit code of: " + process.ExitCode.ToString() + Environment.NewLine);
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex.Message);
    }
}

private static void Process_OutputDataReceived(object sender, DataReceivedEventArgs e)
{
    Console.WriteLine(e.Data);
}

private static void Process_ErrorDataReceived(object sender, DataReceivedEventArgs e)
{
    Console.WriteLine(e.Data);
}

---

刚刚尝试执行

RunProcess（“cmd”，null）

，我可以看到进程输出。您确定要启动的进程（旧编译器）会写入标准输出吗？您能否从命令行启动编译器，将其输出重定向到文件，如

old_compiler parameters>build_log.txt

，并检查它是否工作？我这样做了，build_log.txt为空。我想我可以假设它不写入标准输出？？