是我的过程中等待输入？ [英] Is my process waiting for input?

问题描述

我使用Process类运行exe文件。

该EXE是我无法控制第三方控制台应用程序。

我想知道该进程是否正在等待命令行中输入。

如果这有什么区别，我打算杀应用程序是否应该等待输入。

有用于当有从程序等待输出读取合适的事件，但我看不到任何类似的过程时， 。在耐心等待输入

 的ProcessStartInfo信息=新的ProcessStartInfo（）; 
 info.FileName =MyApp.exe的; 
 info.CreateNoWindow = TRUE; 
 info.UseShellExecute = FALSE; 
 info.RedirectStandardError = TRUE; 
 info.RedirectStandardInput = TRUE; 
 info.RedirectStandardOutput = TRUE; 
 process.StartInfo =信息; 
 
 process.OutputDataReceived + =新DataReceivedEventHandler（process_OutputDataReceived）; 
 process.ErrorDataReceived + =新DataReceivedEventHandler（process_ErrorDataReceived）; 
 
的Process.Start（）; 
 
 process.BeginOutputReadLine（）; 
 process.BeginErrorReadLine（）; 
 
 
 process.WaitForExit（）; 
  

我如何检测我的进程正在等待输入？

< DIV CLASS =h2_lin>解决方案

根据什么第三方程序做正是你可以尝试轮询的线程的状态：

 的foreach（ProcessThread线程process.Threads）
如果（thread.ThreadState == ThreadState.Wait 
和;&安培; thread.WaitReason == ThreadWaitReason.UserRequest）
 process.Kill（）; 
  

如果做不到这一点......你可以尝试

  process.StandardInput.Close（）; 
  

调用Start（）之后，我推测，一个异常将在子过程中提出，如果它试图从标准输入读取。

I am using the Process class to run an exe.

The exe is a 3rd party console application that I do not control.

I wish to know whether the process is waiting for input on the command line.

Should it make any difference, I intend to kill the application should it be waiting for input.

There are suitable events for when there is output from the program waiting to be read, but I cannot see anything similar for when the process is waiting patiently for input.

            ProcessStartInfo info = new ProcessStartInfo();
            info.FileName = "myapp.exe";
            info.CreateNoWindow = true;
            info.UseShellExecute = false;
            info.RedirectStandardError = true;
            info.RedirectStandardInput = true;
            info.RedirectStandardOutput = true;
            process.StartInfo = info;

            process.OutputDataReceived += new DataReceivedEventHandler(process_OutputDataReceived);
            process.ErrorDataReceived += new DataReceivedEventHandler(process_ErrorDataReceived);

            process.Start();

            process.BeginOutputReadLine();
            process.BeginErrorReadLine();


            process.WaitForExit();

How do I detect that my process is waiting for input?

解决方案

Depending on what the 3rd party process is doing exactly you could try polling its threads' states:

foreach(ProcessThread thread in process.Threads)
    if (thread.ThreadState == ThreadState.Wait
        && thread.WaitReason == ThreadWaitReason.UserRequest)
            process.Kill();

Failing that... you can try to

process.StandardInput.Close();

after calling Start(), I conjecture that an exception will be raised in the child process if it's trying to read from standard input.

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