Check if program is running

[Nikolay Petrov]

How could I check if my app is running.

I would like to check if my app is running for specified user, because it is
used in Terminal Server.

I want the program to somehow check if another copy is running for the user,
and if so to display a warning message, them exit.

TIA

 

[Cor Ligthert]

Nikolay,

I don't know it in a Terminal Server this is the easiest one without, which
prevents however as well other programs with the same name to run.

\\\
Private mutCreated as Boolean
Private mut As New Threading.Mutex(True, "myProgram", mutCreated)
Private Sub Form1_Load(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
If Not mutCreated Then Me.Close()
'etc
End Sub
///
I hope this helps?

Cor

 

[Nikolay Petrov]

the method with the mutex is ok
but don't work in Terminal Server, because when one user run the program,
others can't

 

[Brian Swanson]

Here's the routine I use for checking if another copy is currently
running. Not sure if this returns a false positive if another user on a
terminal server is running it though.

Function PrevInstance() As Boolean
If UBound( _
Diagnostics.Process.GetProcessesByName( _
Process.GetCurrentProcess.ProcessName)) > 0 Then
Return True
End
Else
Return False
End If
End Function

Hope this helps,
Brian Swanson

 

[Herfried K. Wagner [MVP]]

Brian,

Here's the routine I use for checking if another copy is currently
running. Not sure if this returns a false positive if another user on a
terminal server is running it though.

Function PrevInstance() As Boolean
If UBound( _
Diagnostics.Process.GetProcessesByName( _
Process.GetCurrentProcess.ProcessName)) > 0 Then
Return True
End
Else
Return False
End If
End Function

Notice that process names are not necessarily unique, so there can be
different applications with the same process name.