“make single instance application” what does this do?

Question

in vb 2008 express this option is available under application properties. does anyone know what is its function? does it make it so that it\'s impossible to open two instanc

Answer 1

    Dim _process() As Process
    _process = Process.GetProcessesByName(Process.GetCurrentProcess().ProcessName)
    If _process.Length > 1 Then
        MsgBox("El programa ya está ejecutandose.", vbInformation)
        End
    End If