Process.StandardOutput.ReadToEnd 卡死

别折腾了，代码在下面，拿去撸

    /// <summary>
    /// CMD 运行工具类
    /// UseShellExecute = false
    /// </summary>
    public class CommandRunner
    {
        /// <summary>启动进程时使用的应用程序</summary>
        public string ExecutablePath { get; }
        /// <summary>启动的进程的工作目录</summary>
        public string WorkingDirectory { get; }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="executablePath">启动进程时使用的应用程序</param>
        /// <param name="workingDirectory"></param>
        public CommandRunner(string executablePath, string workingDirectory = null)
        {
            ExecutablePath = executablePath ?? throw new ArgumentNullException(nameof(executablePath));
            WorkingDirectory = workingDirectory ?? Path.GetDirectoryName(executablePath);
        }

        /// <summary>
        /// 执行命令
        /// </summary>
        /// <param name="arg"></param>
        /// <returns></returns>
        public string Run(string arg)
        {
            Console.WriteLine($"{ExecutablePath} {arg}");
            var info = new ProcessStartInfo(ExecutablePath, arg)
            {
                CreateNoWindow = true,
                RedirectStandardOutput = true,

                UseShellExecute = false,
                WorkingDirectory = WorkingDirectory,
            };

            var proc = new Process()
            {
                StartInfo = info
            };
            var flag = proc.Start();
            if (flag) Console.WriteLine($"启用了新进程：{ExecutablePath} {arg}");

            using (var sr = proc.StandardOutput)
            {
                var retStr = sr.ReadToEnd();
                proc.WaitForExit();
                return retStr;
            }
        }

        /// <summary>
        /// 循环执行命令，按Q退出
        /// 测试：ReadCmd(() => Console.ReadLine(), retStr => Console.WriteLine(retStr));
        /// </summary>
        /// <param name="readCmd"></param>
        /// <param name="outputAct"></param>
        public static void ReadCmd(Func<String> readCmd, Action<String> outputAct)
        {
            var info = new ProcessStartInfo()
            {
                FileName = "cmd.exe",
                CreateNoWindow = true,

                RedirectStandardInput = true,
                RedirectStandardOutput = true,
                RedirectStandardError = true,

                UseShellExecute = false,
                //WorkingDirectory = WorkingDirectory,
            };

            while (true)
            {
                Console.WriteLine($"请输入命令(按Q退出)：");
                var cmdStr = readCmd?.Invoke();
                if (string.IsNullOrEmpty(cmdStr)) continue;
                if (cmdStr.EqualIgnoreCase("q")) break;

                using (var proc = new Process())
                {
                    proc.StartInfo = info;

                    var flag = proc.Start();
                    if (flag) Console.WriteLine($"启用了新进程");

                    using (var sw = proc.StandardInput)
                    {
                        sw.AutoFlush = true;

                        sw.WriteLine($"{cmdStr}&exit");
                        sw.Flush();

                        // 读取响应
                        using (var sr = proc.StandardOutput)
                        {
                            var retStr = sr.ReadToEnd();
                            proc.WaitForExit();

                            outputAct?.Invoke(retStr);
                        }
                    }
                }
            }
        }

        /// <summary>
        /// 
        /// </summary>
        public static void RunTest()
        {
            Console.WriteLine("自动 git 命令");

            var git = new CommandRunner("git", @"D:\_Projects");
            var status = git.Run("status");
            Console.WriteLine(status);
            var status2 = git.Run("status");
            Console.WriteLine(status2);

            Console.WriteLine("按 Enter 退出程序……");
            Console.ReadLine();
        }

    }