vb.net program çalışıyor mu kontrol?-çözüldü

Dim pList() As System.Diagnostics.Process = System.Diagnostics.Process.GetProcesses
        For Each proc As System.Diagnostics.Process In pList

            If proc.ProcessName.ToString = "deneme" Then
                Try
                    MsgBox("program çalışıyor!kapatılacak")
                    End
                Catch ex As Exception
                End Try
            End If


        Next

Imports System.Threading
  Dim objMutex As Mutex

  objMutex = New Mutex(False, "SINGLE_INSTANCE_APP_MUTEX")
        If objMutex.WaitOne(0, False) = False Then
            objMutex.Close()
            objMutex = Nothing
            MessageBox.Show("Instance already running")
            End
        End If
        'if you get to this point it's frist instance
        'continue with app