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code works on xp but not on vista

Posted on 2007-11-28
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Last Modified: 2010-04-21
The following code (included in the program I'm attempting to upgrade) runs fine on xp, but not on Vista.

Public Sub CheckForExistingInstance()
        Try
            If System.Diagnostics.Process.GetProcessesByName(Process.GetCurrentProcess.ProcessName).Length > 1 Then
                ActivatePreviousInstance(gsBWBackupTitle)

                End
            End If

        Catch
            MessageBox.Show(Err.Number, Err.Description)
           End Try
    End Sub

The error I get is - the error number = 5 and the description is "couldn't get process information from remote machine.."

any ideas?

Thanks!
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Question by:stephaniem712
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5 Comments
 
LVL 21

Accepted Solution

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mastoo earned 1500 total points
ID: 20367430
I assume the error is on this line:

System.Diagnostics.Process.GetProcessesByName(Process.GetCurrentProcess.ProcessName)

GetProcesses takes elevated privileges you probably don't have on the vista box.  You're better off using the application framework's single instance (3.0 framework) or mutex to enforce a single instance.
0
 

Author Comment

by:stephaniem712
ID: 20396669
I found some code using the mutex object.  However, it also includes "process.getcurent process().processname".  I've read about the mutex object, but need some "basic" help with it if this is the route I should take.  Any more ideas out there?  Thanks!!
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LVL 21

Expert Comment

by:mastoo
ID: 20397020
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Author Closing Comment

by:stephaniem712
ID: 31411481
I found the info on the mutex object anf incorporated it in the code which appears to be working.
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