sector = Convert.ToInt32(j / 8192);
                for (int i = 0; i <= sector + 1; i++)
                //for (int i = 0; i <= 5; i++)
                {
                    //if (!axMSComm1.PortOpen)
                    if (!axNETComm1.PortOpen)
                    {
                        //axMSComm1.PortOpen = true;
                        axNETComm1.PortOpen = true;
                    }
                    //axMSComm1.InBufferCount = 0;
                    axNETComm1.InBufferCount = 0;
                    strPmtk = "PMTK182,7," + i * 2000 + ",2000";
                    strChksum = getCheckSum(strPmtk);
                    pmtkstr2 = "$" + strPmtk + "*" + strChksum;
                    //axMSComm1.Output = pmtkstr2;
                    String Buffer = pmtkstr2 + "\r\n";
                    Object oBuffer = (object)Buffer;
                    //axNETComm1.set_Settings(ref oBuffer);
                  
                    axNETComm1.set_Output(ref oBuffer);
                
                    //axMSComm1.Output = pmtkstr2 + "\r\n";
                                
                    System.Threading.Thread.Sleep(1000);

                    string pmtk = "";
                    string Str = "";
                    //if (axMSComm1.InBufferCount > 0)
                    if (axNETComm1.InBufferCount > 0)
                    {
                       // Str = axMSComm1.Input.ToString();
                        Str = axNETComm1.InputData.ToString();
                    }
                    else
                    {
                                              
                        MessageBox.Show("null");  
                    }