Streamreader readline从流程执行返回空值[重复]

Question

我正在尝试逐行获取流程的输出，但我得到了返回的空值。你能检查我下面的代码，让我知道我在这里做错了什么吗？请推荐

Process process = new Process();
process.StartInfo.FileName = dirPath + "\\test.exe";
process.StartInfo.Arguments = "-a -h -s " + dir;
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.UseShellExecute = false;
process.StartInfo.CreateNoWindow = true;
process.Start();

using (StreamReader streamReader = Process.StandardOutput)
{
    string line = streamReader.ReadLine();
    while (line != null)
    {
        Console.WriteLine(line);
    }
}
process.WaitForExit();

如果我使用string line = streamReader.ReadToEnd()，它会显示所有行。

Answer 1

我可以通过进行以下更改来解决此问题。我需要在 while 循环中添加 !streamReader.EndOfStream ，然后使用对我有用的 streamReader.ReadLine() 逐行解析。

                Process process = new Process();
                process.StartInfo.FileName = Pathdir + "\\test.exe";
                process.StartInfo.Arguments = "-a -h -s " + dir;
                process.StartInfo.RedirectStandardOutput = true;
                process.StartInfo.UseShellExecute = false;
                process.StartInfo.CreateNoWindow = true;
                process.Start();

                using (StreamReader streamReader = process.StandardOutput)
                {
                    while (!streamReader.EndOfStream)
                    {
                        string line = streamReader.ReadLine();
                        Console.WriteLine(line);
                    }
                }