Sub DBConn_PgSQL()
        db_string = "Server=localhost;Port=5432;Database=customer;username=postgres;password=wishimajaya"
        Conn4 = New NpgsqlConnection(db_string)

        Try
            Conn4.Open()
            MsgBox("PostgreSQL Succes")
        Catch ex As NpgsqlException
            MsgBox(ex.Message)
        End Try
End Sub