How do I kill a process using Vb NET or C

Question

I have a scenario where I have to check whether user has already opened Microsoft Word   If he has  then I have to kill the winword exe process and continue to execute my code    Does any one have any straight-forward code for killing a process using vb net or c

User · Answer

I opened one Word file  2  Now I open another word file through vb net runtime programmatically  3  I want to kill the second process alone through programmatically  4  Do not kill first process

User · Answer

Please see the example below   public partial class Form1   Form        ThreadStatic        static Microsoft Office Interop Word Application wordObj   null       public Form1                 InitializeComponent               public bool OpenDoc string documentName                bool bSuccss   false          System Threading Thread newThread          int iRetryCount          int iWait          int pid   0          int iMaxRetry   3           try                       iRetryCount   1           TRY OPEN DOCUMENT              iWait   0              newThread   new Thread      gt  OpenDocument documentName  pid                newThread Start             WAIT FOR WORD              Thread Sleep 1000               iWait   iWait   1               if  iWait  lt  60    1 minute wait                 goto WAIT FOR WORD              else                               iRetryCount   iRetryCount   1                  newThread Abort                        -----------------------------------------                    killing unresponsive word instance                 if   wordObj    null                                         try                                               Process GetProcessById pid  Kill                            Marshal ReleaseComObject wordObj                           wordObj   null                                            catch  Exception ex                                                                                    ----------------------------------------                 if  iMaxRetry  gt   iRetryCount                      goto TRY OPEN DOCUMENT                  else                     goto WORD SUCCESS                                  catch  Exception ex                        bSuccss   false                WORD SUCCESS           return bSuccss             private bool OpenDocument string docName  int pid                bool bSuccess   false          Microsoft Office Interop Word Application tWord          DateTime sTime          DateTime eTime           try                       tWord   new Microsoft Office Interop Word Application                sTime   DateTime Now              wordObj   new Microsoft Office Interop Word Application                eTime   DateTime Now              tWord Quit false               Marshal ReleaseComObject tWord               tWord   null              wordObj Visible   false              pid   GETPID sTime  eTime                  now do stuff             wordObj Documents OpenNoRepairDialog docName                 other code              if  wordObj    null                                wordObj Quit false                   Marshal ReleaseComObject wordObj                   wordObj   null                            bSuccess   true                    catch                      return bSuccess             private int GETPID System DateTime startTime  System DateTime endTime                int pid   0           try                       foreach  Process p in Process GetProcessesByName  WINWORD                                  if  string IsNullOrEmpty string Empty   p MainWindowTitle   amp  p HasExited    false  amp  amp   p StartTime Ticks  gt   startTime Ticks  amp  p StartTime Ticks  lt   endTime Ticks                                         pid   p Id                      break                                                    catch                             return pid

User · Answer

Killing the Word process outright is possible  see some of the other replies   but outright rude and dangerous  what if the user has important unsaved changes in an open document  Not to mention the stale temporary files this will leave behind     This is probably as far as you can go in this regard  VB NET        Dim proc   Process GetProcessesByName  winword       For i As Integer   0 To proc Count - 1         proc i  CloseMainWindow       Next i   This will close all open Word windows in an orderly fashion  prompting the user to save his her work if applicable   Of course  the user can always click  Cancel  in this scenario  so you should be able to handle this case as well  preferably by putting up a  please close all Word instances  otherwise we can t continue  dialog

User · Answer

Here is an easy example of how to kill all Word Processes   Process   procs   Process GetProcessesByName  winword     foreach  Process proc in procs      proc Kill

User · Answer

It s better practise  safer and more polite to detect if the process is running and tell the user to close it manually   Of course you could also add a timeout and kill the process if they ve gone away

User · Answer

You ll want to use the System Diagnostics Process Kill method  You can obtain the process you want using  System Diagnostics Proccess GetProcessesByName   Examples have already been posted here  but I found that the non- exe version worked better  so something like   foreach   Process p in System Diagnostics Process GetProcessesByName  winword           try               p Kill            p WaitForExit       possibly with a timeout           catch   Win32Exception winException                    process was terminating or can t be terminated - deal with it           catch   InvalidOperationException invalidException                    process has already exited - might be able to let this one go            You probably don t have to deal with NotSupportedException  which suggests that the process is remote

User · Answer

You can bypass the security concerns  and create a much politer application by simply checking if the Word process is running  and asking the user to close it  then click a  Continue  button in your app  This is the approach taken by many installers   private bool isWordRunning          return System Diagnostics Process GetProcessesByName  winword   Length  gt  0      Of course  you can only do this if your app has a GUI

User · Answer

In my tray app  I needed to clean Excel and Word Interops  So This simple method kills processes generically    This uses a general exception handler  but could be easily split for multiple exceptions like stated in other answers  I may do this if my logging produces alot of false positives  ie can t kill already killed   But so far so guid  work joke         lt summary gt      Kills Processes By Name      lt  summary gt       lt param name  names  gt List of Process Names lt  param gt  private void killProcesses List lt string gt  names        var processes   new List lt Process gt         foreach  var name in names          processes AddRange Process GetProcessesByName name  ToList         foreach  Process p in processes                try                       p Kill                p WaitForExit                      catch  Exception ex                           Logging             RunProcess insertFeedback  Clean Processes Failed   ex                       This is how i called it then   killProcesses  new List lt string gt       winword    excel

User · Answer

Something like this will work   foreach   Process process in Process GetProcessesByName   winword            process Kill        process WaitForExit

User · Answer

public bool FindAndKillProcess string name                  here we re going to get a list of all running processes on           the computer         foreach  Process clsProcess in Process GetProcesses                    now we re going to see if any of the running processes               match the currently running processes by using the StartsWith Method                this prevents us from incluing the  EXE for the process we re looking for                  Be sure to not               add the  exe to the name you provide  i e  NOTEPAD                not NOTEPAD EXE or false is always returned even if               notepad is running             if  clsProcess ProcessName StartsWith name                                   since we found the proccess we now need to use the                   Kill Method to kill the process  Remember  if you have                   the process running more than once  say IE open 4                   times the loop thr way it is now will close all 4                    if you want it to just close the first one it finds                   then add a return  after the Kill                 try                                        clsProcess Kill                                      catch                                       return false                                      process killed  return true                 return true                                    process not found  return false         return false

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