2

当我尝试将进程信息写入控制台时，我得到 System.ArgumentException 和 System.ComponentModel.Win32Exception。这是什么原因造成的？我怎样才能停止拥有这些？

        Process processListe = Process.GetProcesses();


            for (int i = 0; i < processListe.Count(); i++)
            {
                try
                {
                string companyName = processListe[i].MainModule.FileVersionInfo.CompanyName;
                string fileVersion = processListe[i].MainModule.FileVersionInfo.FileVersion;

                Console.WriteLine(companyName  + " " + fileVersion);


                }
                catch (Exception) { }


            }

“string companyName = processListe[i].MainModule.FileVersionInfo.CompanyName;”中发生错误 线。

错误信息：

   System.ArgumentException: Illegal characters in path.
   at System.Security.Permissions.FileIOPermission.HasIllegalCharacters(String[] str)
   at System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionAccess access, AccessControlActions control, String[] pathListOrig, Boolean checkForDuplicates, Boolean needFullPath, Boolean copyPathList)
   at System.Security.Permissions.FileIOPermission..ctor(FileIOPermissionAccess access, String[] pathList, Boolean checkForDuplicates, Boolean needFullPath)
   at System.IO.Path.GetFullPath(String path)
   at System.Diagnostics.FileVersionInfo.GetFullPathWithAssert(String fileName)
   at System.Diagnostics.FileVersionInfo.GetVersionInfo(String fileName)
   at System.Diagnostics.ProcessModule.get_FileVersionInfo()


   A first chance exception of type 'System.ComponentModel.Win32Exception' occurred in System.dll
   System.ComponentModel.Win32Exception (0x80004005): Unable to enumerate the process modules.
   at System.Diagnostics.NtProcessManager.GetModuleInfos(Int32 processId, Boolean firstModuleOnly)
   at System.Diagnostics.NtProcessManager.GetFirstModuleInfo(Int32 processId)
   at System.Diagnostics.Process.get_MainModule()

最后，我对那些让我出错的过程进行了信息输出：

    Exception: Illegal characters in path.
    Proess Name: winlogon Company Name: Aestan Software Version: 1.6.1.33
    Detail: System.ArgumentException: Illegal characters in path.
   at System.Security.Permissions.FileIOPermission.HasIllegalCharacters(String[] str)
   at System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionAccess access, AccessControlActions control, String[] pathListOrig, Boolean checkForDuplicates, Boolean needFullPath, Boolean copyPathList)
   at System.Security.Permissions.FileIOPermission..ctor(FileIOPermissionAccess access, String[] pathList, Boolean checkForDuplicates, Boolean needFullPath)
   at System.IO.Path.GetFullPath(String path)
   at System.Diagnostics.FileVersionInfo.GetFullPathWithAssert(String fileName)
   at System.Diagnostics.FileVersionInfo.GetVersionInfo(String fileName)
   at System.Diagnostics.ProcessModule.get_FileVersionInfo()

    Exception: Illegal characters in path.
    Proess Name: csrss Company Name: Microsoft Corporation Version: 2009.0100.1600.01 ((KJ_RTM).100402-1540 )
    Detail: System.ArgumentException: Illegal characters in path.
at System.Security.Permissions.FileIOPermission.HasIllegalCharacters(String[] str)
   at System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionAccess access, AccessControlActions control, String[] pathListOrig, Boolean checkForDuplicates, Boolean needFullPath, Boolean copyPathList)
   at System.Security.Permissions.FileIOPermission..ctor(FileIOPermissionAccess access, String[] pathList, Boolean checkForDuplicates, Boolean needFullPath)
   at System.IO.Path.GetFullPath(String path)
   at System.Diagnostics.FileVersionInfo.GetFullPathWithAssert(String fileName)
   at System.Diagnostics.FileVersionInfo.GetVersionInfo(String fileName)
   at System.Diagnostics.ProcessModule.get_FileVersionInfo()

    Exception: Unable to enumerate the process modules.
    Proess Name: System Company Name: BitTorrent, Inc. Version: 7.5.0.25682
    Detail: System.ComponentModel.Win32Exception (0x80004005): Unable to enumerate the process modules. 
at System.Diagnostics.NtProcessManager.GetModuleInfos(Int32 processId, Boolean firstModuleOnly)
   at System.Diagnostics.NtProcessManager.GetFirstModuleInfo(Int32 processId)
   at System.Diagnostics.Process.get_MainModule()

    Exception: Access is denied
    Proess Name: Cheat Engine Company Name:  Version: 5.6.1.10
    Detail:  System.ComponentModel.Win32Exception (0x80004005): Access is denied
   at System.Diagnostics.ProcessManager.OpenProcess(Int32 processId, Int32 access, Boolean throwIfExited)
   at System.Diagnostics.Process.GetProcessHandle(Int32 access, Boolean throwIfExited)
   at System.Diagnostics.Process.get_HasExited()
4

3 回答 3

7

简短的回答是您无法摆脱异常。当我运行这段代码时，我看到了一些我没有在文档中明确调用的异常：

  1. Win32Exception - 拒绝访问：进程正在以用户身份运行，而您的当前用户无权访问该进程。请注意，即使以管理员身份运行，您也无法访问所有进程（例如，由于 DRM 限制，audiodg.exe）
  2. Win32Exception - 32 位进程无法访问 64 位进程的模块
  3. Win32Exception - 无法枚举进程模块 - 我看到这发生在伪进程 System 和 Idle 上 - 它们不是真正的进程（它们是内核服务的占位符）并且没有任何模块要列出。
于 2011-12-03T18:38:46.600 回答
4

根据微软的说法，如果进程在您调用的时间和您访问的时间ArgumentException之间退出，您会得到Process.GetProcesses()processLite[i].MainModule

检查processLite[i].HasExited可能会有所帮助，但不能保证，因为在您进行下一次调用之前，进程仍有足够的时间退出。

于 2011-12-03T18:26:46.370 回答
2

只是一个想法，但是当您输出信息时，您是否应该确保该过程仍在运行？我认为该列表可能只是对进程的引用，当您尝试访问属性时，它会尝试重新调用现在不存在的进程。

于 2011-12-03T18:26:33.657 回答