如何从通过Process.Start()作为列表或数组运行的命令读取标准输出

Question

我需要获取在某个主机上运行的所有计划任务列表到C#中的列表或数组中.

查询

schtasks /query /S CHESTNUT105B /FO List

返回如下列表:

HostName:      CHESTNUT105B
TaskName:      Calculator
Next Run Time: 12:00:00, 10/28/2010
Status:        Running

HostName:      CHESTNUT105B
TaskName:      GoogleUpdateTaskMachineCore
Next Run Time: At logon time
Status:

HostName:      CHESTNUT105B
TaskName:      GoogleUpdateTaskMachineCore
Next Run Time: 13:02:00, 10/28/2010

我有以下代码来执行我上面指定的命令:

static void Main(string[] args)
{
    Process p = new Process();
    p.StartInfo.UseShellExecute = false;
    p.StartInfo.FileName = "SCHTASKS.exe";
    p.StartInfo.RedirectStandardError = true;
    p.StartInfo.RedirectStandardOutput = true;
    p.StartInfo.CreateNoWindow = true;
    p.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;


    string MachineName = "CHESTNUT105b";
    string ScheduledTaskName = "Calculator";
    string activeDirectoryDomainName = "xxx";
    string userName = "xxx";
    string password = "xxxxx";

    p.StartInfo.Arguments = String.Format("/Query /S {0} /FO LIST", MachineName);

    p.Start();
}

如何在C#中读取生成列表的列表？

Answer 1

像这样的东西应该有效（未经测试）。这会将输出的每一行包含在列表的一个元素中。

class GetSchTasks {

    List<string> output = new List<string>();

    public void Run()
    {
        Process p = new Process();
        p.StartInfo.UseShellExecute = false;
        p.StartInfo.FileName = "SCHTASKS.exe";
        p.StartInfo.RedirectStandardError = true;
        p.StartInfo.RedirectStandardOutput = true;
        p.StartInfo.CreateNoWindow = true;
        p.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;


        string MachineName = "CHESTNUT105b";
        string ScheduledTaskName = "Calculator";
        string activeDirectoryDomainName = "xxx";
        string userName = "xxx";
        string password = "xxxxx";

        p.StartInfo.Arguments = String.Format("/Query /S {0} /FO LIST", MachineName);

        p.Start();
        p.BeginOutputReadLine();
        p.BeginErrorReadLine();
        p.OutputDataReceived += new DataReceivedEventHandler(p_OutputDataReceived);
        p.ErrorDataReceived += new DataReceivedEventHandler(p_ErrorDataReceived);
        p.WaitForExit();
        p.Close();
        p.Dispose();

    }

    void p_ErrorDataReceived(object sender, DataReceivedEventArgs e)
    {
        //Handle errors here
    }

    void p_OutputDataReceived(object sender, DataReceivedEventArgs e)
    {
        output.Add(e.Data);
    }

}

现在，您可以稍后解释该列表以构建一组合适的对象来表示每个计划任务，也可以不表示，具体取决于实际用例。ScheduledTask您还可以在处理程序本身中构建 s 对象列表p_OutputDataReceived，只需将每一行与预期的开头进行比较，例如，if (e.Data.StartsWith("HostName:") ) { //parse the line and grab the host name }