使用 C# 等待外壳应用程序完成

最新推荐文章于 2018-03-31 15:56:00 发布

转载最新推荐文章于 2018-03-31 15:56:00 发布 · 1k 阅读

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#c# #system #string #path #file #测试

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本文介绍如何使用C#代码让程序等待一个外部应用程序完成运行，并设置合理的超时时间来处理未响应的情况。

无限期等待外壳应用程序完成

下面的代码示例启动另一个应用程序（本例中是 Notepad），并无限期等待该应用程序关闭。

//How to Wait for a Shelled Process to Finish
    //Get the path to the system folder.
    string sysFolder= 
 Environment.GetFolderPath(Environment.SpecialFolder.System);
    //Create a new process info structure.
    ProcessStartInfo pInfo = new ProcessStartInfo();
    //Set the file name member of the process info structure.
    pInfo.FileName = sysFolder + @"/eula.txt";
    //Start the process.
    Process p = Process.Start(pInfo);
    //Wait for the window to finish loading.
    p.WaitForInputIdle();
    //Wait for the process to end.
    p.WaitForExit();
    MessageBox.Show("Code continuing...");

为外壳应用程序设置超时
下面的代码示例为外壳应用程序设置了超时。示例中的超时设置为 5 秒。在测试中您可能希望调整此数字（以毫秒计）。

//Set a time-out value.
    int timeOut=5000;
    //Get path to system folder.
    string sysFolder= 
      Environment.GetFolderPath(Environment.SpecialFolder.System);
    //Create a new process info structure.
    ProcessStartInfo pInfo = new ProcessStartInfo();
    //Set file name to open.
    pInfo.FileName = sysFolder + @"/eula.txt";
    //Start the process.
    Process p = Process.Start(pInfo);
    //Wait for window to finish loading.
    p.WaitForInputIdle();
    //Wait for the process to exit or time out.
    p.WaitForExit(timeOut);
    //Check to see if the process is still running.
    if (p.HasExited == false)
     //Process is still running.
     //Test to see if the process is hung up.
     if (p.Responding)
           //Process was responding; close the main window.
            p.CloseMainWindow();
     else
         //Process was not responding; force the process to close.
    p.Kill();
    MessageBox.Show("Code continuing...");