Test for multiple application executions (VB.NET)?

[Larry Woods]

Can't find the right object...

How do I test to see if my application is already executing; i.e., multiple
application executions?

TIA,

Larry Woods

 

[Not Aaron]

There is probably an easier way, but I get a list of the processes by
my apps name, then see if there is more than 1. If so, there is
already one running, otherwise there isn't.

Dim pList() As Process
Dim myProcess As System.Diagnostics.Process
pList = myProcess.GetProcessesByName("<appname>")
Dim i As Integer = 0
For Each myProcess In pList
' MsgBox(myProcess.ProcessName)
i += 1
Next
If (i > 1) Then
MsgBox("already running!", MsgBoxStyle.Exclamation,
"Error")
Application.Exit()
End If


Hope this helps.

 

[Cor Ligthert]

Larry,

And the alternative, on from Not Aaron.

\\\
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
///

Both the solution that Not Aaron gives and that I show have problems when
there is another program with the same name running. When you want to avoid
that, than look in the link that Herfried surely will give on this question
to the solution from Tom Shelton.

I hope this helps a little bit?

Cor