C＃：等待命令完全執行

Question

從C＃代碼連接到遠程Unix服務器后，我試圖執行命令提示符行。 我已經使用了下面的代碼，並且正在工作。 但是，我希望命令在執行下一個命令行之前完全執行。 當前行的執行速度更快，因此，我得到的結果是錯誤的。

每個命令應完成處理，然后移至下一個命令。 在我的C＃Web應用程序中，在按鈕單擊事件上有以下代碼

SshClient sshclient = new SshClient(hostname, username, pwd);
  sshclient.Connect();
  ShellStream stream = sshclient.CreateShellStream("cmsd", 80, 24, 800, 600, 1024);
objclass.sendCommand("command1", stream).ToString();
 objclass.sendCommand("command2", stream).ToString();

該類文件包含以下方法：

public StringBuilder  sendCommand(string customCMD, ShellStream stream)
        {
            StringBuilder answer = new StringBuilder();
            answer.Clear();
            var reader = new StreamReader(stream);
            var writer = new StreamWriter(stream);
            writer.AutoFlush = true;
            WriteStream(customCMD, writer, stream);
            answer = ReadStream(reader);
            return answer;           
        }    

        private void WriteStream(string cmd, StreamWriter writer, ShellStream stream)
        {
            writer.WriteLine(cmd);
            while (stream.Length == 0)
            {
                Thread.Sleep(500);
            }
        }

        private StringBuilder ReadStream(StreamReader reader)
        {
            StringBuilder result = new StringBuilder();
            string line;
            while ((line = reader.ReadLine()) != null)
            {
                result.AppendLine(line);
            }
            return result;
        }

//嘗試新代碼

public StringBuilder sendCommand(string customCMD, ShellStream stream)
        {
            StringBuilder answer = new StringBuilder();
            answer.Clear();
            answer.Length = 0;            

            var reader = new StreamReader(stream);
            var writer = new StreamWriter(stream);
            writer.AutoFlush = true;

            while (!stream.DataAvailable)
            {
                WriteStream(customCMD, writer, stream);
                Thread.Sleep(5000);
            }

            answer = ReadStream(reader);

            return answer;

        }

Answer 1

您可以嘗試類似於以下代碼的操作：

using (var client = new SshClient(hostname, username, pwd))
{
    client.Connect();
    var cmd = client.CreateCommand("sleep 15s;echo 123");
    var asynch = cmd.BeginExecute();
    while (!asynch.IsCompleted)
    {
         //  Waiting for command to complete...
         Thread.Sleep(2000);
    }
    result = cmd.EndExecute(asynch);
    client.Disconnect();
}