kill all programs from user x with vb.net

Question

Hi, I try to kill all processes of a specified user.

i use

       Try
        Shell("C:\WINDOWS\system32\taskkill.exe /S localhost /U userx /P passwort /f /FI " & Chr(34) & "USERNAME eq userx" & Chr(34))
    Catch ex As Exception
        MessageBox.Show("LogoutException occurred. " + ex.Message)
    End Try

But Nothing happened. If i try to use this taskkill..... command by console it works fine. one of the apps that should be closed is the explorer.exe. All apps`s From the user must be closed.

I inserted /u /p because the application it self runs under a different user.

has anyone an idea how i could kill truely all proccesses from that 1 user?

EDIT: i forget a little information, The application is started by a user with user-rights. thats the reason i use taskkill - there i can enter a different user with administrativ privilegs. So the second Problem is that i can`t use process.kill directly.

thx a lot for help.

Answer 1

If you know the ID of the process, you can kill it via the Process class. Take this code snippet for example

Public Sub KillProcess(id as Integer)
  For Each p as Process in Process.GetProcesses()
    if p.Id = id Then
      p.Kill()
    End If
  Next
End SUb

Answer 2

edg answerd my Question too but i cant see the answer in the threadview??? Only at my Profile.

He wrote i should try to add the domain to the logindata. Its a local Account so i changed the code to

Shell("C:\WINDOWS\system32\taskkill.exe /S localhost /U " & System.Net.Dns.GetHostName() & "\userx .........

but nothing changed.

Answer 3

foreach (Process p in Process.GetProcesses())
{
 if (String.Equals(p.ProcessName, name))
 {
  p.Kill();
 }
}

or

Process.GetProcesses()
.Where(p => String.Equals(p.ProcessName, name))
.First()
.Kill(); // kills only first

or

Process.GetProcesses()
.Where(p => String.Equals(p.ProcessName, name))
.ToList()
.ForEach(p => p.Kill()); // kills all

Answer 4

http://stackoverflow.com/questions/562350/requested-registry-access-is-not-allowed here you can find the way to get required administrative rights (so called rights elevating)