How do I investiage / debug what is wrong with my ExecuteNonQuery command?

For the life of me, I can't figure out what is wrong with my ExecuteNonQuery command, but it stops the web application and shuts down the browser window (in Chrome), when I'm in the debugger. I've got it in a try...catch block but as soon as it hits the command it shuts everything down. How can I debug this or figure out what is going on with this command?

        public static void saveNewInspection(ref Inspection theInspection)
        {
            //we only populate the first page of the Inspection data - after this we call UPDATE for subsequent pages

            StringBuilder sbSQL = new StringBuilder();

            //int InspNum = (ArrowGlobalFunc.getMaxInspectionSeqNo()) + 1;
            //theInspection.InspectionID = InspNum;

            using (iDB2Connection conn = new iDB2Connection(ArrowStrings.strConnIseries))
            {
                bool bIsNew = false;
                conn.Open();

                if (theInspection.InspectionID == 0 || HttpContext.Current.Session["ISPNUM"].ToString() == "0" || HttpContext.Current.Session["ISPNUM"].ToString() == "")
                {
                    bIsNew = true;

                    int InspNum = (ArrowGlobalFunc.getMaxInspectionSeqNo()) + 1;
                    theInspection.InspectionID = InspNum;

                    HttpContext.Current.Session["ISPNUM"] = InspNum.ToString();

                    sbSQL.Append("INSERT INTO " + HttpContext.Current.Session["Library"].ToString() + ".INSPECTION (ISPNUM, ");
                    // Spec 1
                    sbSQL.Append("ISPVIN, ISPVIN6, ISPFLEET, ISPUNIT, ISPPHONE, ISPEXT, ISPLOC, ISPCONTACT, ISPADDR, ISPCITY, ISPSTATE, ");
                    sbSQL.Append("ISPZIP, ISPUNITYY, ISPMAKE, ISPMODEL, ISPEMAKE, ISPSRC, ISPDPF, ISPEMODL, ISPENGSERL, ISPENGCPL, ISPHPRATE, ISPBUMPER, ");
                    sbSQL.Append("ISPDUALBDS, ISPBLDMM, ISPBLDYY, ISPSLEEPER, ISPSLEEPSZ, ISPWHEELBS, ISPENGBRK, ISPPOWERST, ISPAIR, ISPINTTYPE, ");
                    sbSQL.Append("ISPINTLEVL, ISPINTUPH, ISPSEATSUS, ISPINTCOLR, ISPPAINT, ISPMIRRORS, ISPMIRRPWR, ISPRADIO6, ISPRADIO2, ");
                    sbSQL.Append("ISPRADIO3, ISPRADIO1, ISPRADIO5, ISPRADIO4, ISPENGFAMC, ISPENGHOUR, ISPHPECU, ICARFAX, ISPTRECDT, ISPODOM, ISPECU, ISPNEWSYS, ");
                    sbSQL.Append("ISPUSERNUM, REQID1, ISPREQDT1) ");

                    sbSQL.Append("VALUES(" + InspNum.ToString() + ", ");
                    // Spec 1
                    sbSQL.Append("@ISPVIN, @ISPVIN6, @ISPFLEET, @ISPUNIT, @ISPPHONE, @ISPEXT, @ISPLOC, @ISPCONTACT, @ISPADDR, @ISPCITY, @ISPSTATE, ");
                    sbSQL.Append("@ISPZIP, @ISPUNITYY, @ISPMAKE, @ISPMODEL, @ISPEMAKE, @ISPSRC, @ISPDPF, @ISPEMODL, @ISPENGSERL, @ISPENGCPL, @ISPHPRATE, @ISPBUMPER, ");
                    sbSQL.Append("@ISPDUALBDS, @ISPBLDMM, @ISPBLDYY, @ISPSLEEPER, @ISPSLEEPSZ, @ISPWHEELBS, @ISPENGBRK, @ISPPOWERST, @ISPAIR, @ISPINTTYPE, ");
                    sbSQL.Append("@ISPINTLEVL, @ISPINTUPH, @ISPSEATSUS, @ISPINTCOLR, @ISPPAINT, @ISPMIRRORS, @ISPMIRRPWR, @ISPRADIO6, @ISPRADIO2, ");
                    sbSQL.Append("@ISPRADIO3, @ISPRADIO1, @ISPRADIO5, @ISPRADIO4, @ISPENGFAMC, @ISPENGHOUR, @ISPHPECU, @ICARFAX, @ISPTRECDT, @ISPODOM, @ISPECU, 1, ");
                    sbSQL.Append("@ISPUSERNUM, @REQID1, @ISPREQDT1)");
                }
                else
                {
                    sbSQL.Append("UPDATE " + HttpContext.Current.Session["Library"].ToString() + ".INSPECTION SET ");
                    sbSQL.Append("ISPVIN = @ISPVIN, ");
                    sbSQL.Append("ISPVIN6 = @ISPVIN6, ");
                    sbSQL.Append("ISPFLEET = @ISPFLEET, ");
                    sbSQL.Append("ISPUNIT = @ISPUNIT, ");
                    sbSQL.Append("ISPPHONE = @ISPPHONE, ");
                    sbSQL.Append("ISPEXT = @ISPEXT, ");
                    sbSQL.Append("ISPLOC = @ISPLOC, ");
                    sbSQL.Append("ISPCONTACT = @ISPCONTACT, ");
                    sbSQL.Append("ISPADDR = @ISPADDR, ");
                    sbSQL.Append("ISPCITY = @ISPCITY, ");
                    sbSQL.Append("ISPSTATE = @ISPSTATE, ");
                    sbSQL.Append("ISPZIP = @ISPZIP, ");
                    sbSQL.Append("ISPUNITYY = @ISPUNITYY, ");
                    sbSQL.Append("ISPMAKE = @ISPMAKE, ");
                    sbSQL.Append("ISPMODEL = @ISPMODEL, ");
                    sbSQL.Append("ISPEMAKE = @ISPEMAKE, ");
                    sbSQL.Append("ISPSRC = @ISPSRC, ");
                    sbSQL.Append("ISPDPF = @ISPDPF, ");
                    sbSQL.Append("ISPEMODL = @ISPEMODL, ");
                    sbSQL.Append("ISPENGSERL = @ISPENGSERL, ");
                    sbSQL.Append("ISPENGCPL = @ISPENGCPL, ");
                    sbSQL.Append("ISPHPRATE = @ISPHPRATE, ");
                    sbSQL.Append("ISPBUMPER = @ISPBUMPER, ");
                    sbSQL.Append("ISPDUALBDS = @ISPDUALBDS, ");
                    sbSQL.Append("ISPBLDMM = @ISPBLDMM, ");
                    sbSQL.Append("ISPBLDYY = @ISPBLDYY, ");
                    sbSQL.Append("ISPSLEEPER = @ISPSLEEPER, ");
                    sbSQL.Append("ISPSLEEPSZ = @ISPSLEEPSZ, ");
                    sbSQL.Append("ISPWHEELBS = @ISPWHEELBS, ");
                    sbSQL.Append("ISPENGBRK = @ISPENGBRK, ");
                    sbSQL.Append("ISPPOWERST = @ISPPOWERST, ");
                    sbSQL.Append("ISPAIR = @ISPAIR, ");
                    sbSQL.Append("ISPINTTYPE = @ISPINTTYPE, ");
                    sbSQL.Append("ISPINTLEVL = @ISPINTLEVL, ");
                    sbSQL.Append("ISPINTUPH = @ISPINTUPH, ");
                    sbSQL.Append("ISPSEATSUS = @ISPSEATSUS, ");
                    sbSQL.Append("ISPINTCOLR = @ISPINTCOLR, ");
                    sbSQL.Append("ISPPAINT = @ISPPAINT, ");
                    //sbSQL.Append("ISPNEWPNT = @ISPNEWPNT, ");
                    sbSQL.Append("ISPMIRRORS = @ISPMIRRORS, ");
                    sbSQL.Append("ISPMIRRPWR = @ISPMIRRPWR, ");
                    sbSQL.Append("ISPRADIO6 = @ISPRADIO6, ");
                    sbSQL.Append("ISPRADIO2 = @ISPRADIO2, ");
                    sbSQL.Append("ISPRADIO3 = @ISPRADIO3, ");
                    sbSQL.Append("ISPRADIO1 = @ISPRADIO1, ");
                    sbSQL.Append("ISPRADIO5 = @ISPRADIO5, ");
                    sbSQL.Append("ISPRADIO4 = @ISPRADIO4, ");
                    sbSQL.Append("ISPENGFAMC = @ISPENGFAMC, ");
                    sbSQL.Append("ISPENGHOUR = @ISPENGHOUR, ");
                    sbSQL.Append("ISPHPECU = @ISPHPECU, ");
                    sbSQL.Append("ICARFAX = @ICARFAX, ");
                    //sbSQL.Append("ICLEANDEC = @ICLEANDEC, ");
                    sbSQL.Append("ISPTRECDT = @ISPTRECDT, ");
                    sbSQL.Append("ISPODOM = @ISPODOM, ");
                    sbSQL.Append("ISPECU = @ISPECU ");
                    sbSQL.Append("WHERE ISPNUM = " + HttpContext.Current.Session["ISPNUM"].ToString());
                }

                using (iDB2Command cmd = new iDB2Command(sbSQL.ToString(), conn))
                {

                    // Spec 1
                    cmd.Parameters.Add(new iDB2Parameter("ISPVIN", theInspection.FullVin));
                    cmd.Parameters.Add(new iDB2Parameter("ISPVIN6", theInspection.VinNo)); // Only Admins can change this
                    cmd.Parameters.Add(new iDB2Parameter("ISPFLEET", theInspection.Fleet));
                    cmd.Parameters.Add(new iDB2Parameter("ISPUNIT", theInspection.Units));
                    cmd.Parameters.Add(new iDB2Parameter("ISPPHONE", theInspection.Phone));
                    cmd.Parameters.Add(new iDB2Parameter("ISPEXT", theInspection.Ext));
                    cmd.Parameters.Add(new iDB2Parameter("ISPLOC", theInspection.Location));
                    cmd.Parameters.Add(new iDB2Parameter("ISPCONTACT", theInspection.Contact));
                    cmd.Parameters.Add(new iDB2Parameter("ISPADDR", theInspection.Addr));
                    cmd.Parameters.Add(new iDB2Parameter("ISPCITY", theInspection.City));
                    cmd.Parameters.Add(new iDB2Parameter("ISPSTATE", theInspection.State));
                    cmd.Parameters.Add(new iDB2Parameter("ISPZIP", theInspection.Zip));
                    cmd.Parameters.Add(new iDB2Parameter("ISPUNITYY", theInspection.mYear));
                    cmd.Parameters.Add(new iDB2Parameter("ISPMAKE", theInspection.Make));
                    cmd.Parameters.Add(new iDB2Parameter("ISPMODEL", theInspection.Model));
                    cmd.Parameters.Add(new iDB2Parameter("ISPEMAKE", theInspection.EngMake));
                    cmd.Parameters.Add(new iDB2Parameter("ISPSRC", theInspection.SRC));
                    cmd.Parameters.Add(new iDB2Parameter("ISPDPF", theInspection.DPF));
                    cmd.Parameters.Add(new iDB2Parameter("ISPEMODL", theInspection.EngModel));
                    cmd.Parameters.Add(new iDB2Parameter("ISPENGSERL", theInspection.EngSerial));
                    cmd.Parameters.Add(new iDB2Parameter("ISPENGCPL", theInspection.EngCpl));
                    cmd.Parameters.Add(new iDB2Parameter("ISPHPRATE", theInspection.HPrated));
                    cmd.Parameters.Add(new iDB2Parameter("ISPBUMPER", theInspection.Bumper));
                    cmd.Parameters.Add(new iDB2Parameter("ISPDUALBDS", theInspection.DualBed));
                    cmd.Parameters.Add(new iDB2Parameter("ISPBLDMM", theInspection.BuildMM));
                    cmd.Parameters.Add(new iDB2Parameter("ISPBLDYY", theInspection.BuildYY));
                    cmd.Parameters.Add(new iDB2Parameter("ISPSLEEPER", theInspection.Sleeper));
                    cmd.Parameters.Add(new iDB2Parameter("ISPSLEEPSZ", theInspection.SlpSize));
                    cmd.Parameters.Add(new iDB2Parameter("ISPWHEELBS", theInspection.Wheelbase));
                    cmd.Parameters.Add(new iDB2Parameter("ISPENGBRK", theInspection.EngBrake));
                    cmd.Parameters.Add(new iDB2Parameter("ISPPOWERST", theInspection.PwrSteer));
                    cmd.Parameters.Add(new iDB2Parameter("ISPAIR", theInspection.Aircon));
                    cmd.Parameters.Add(new iDB2Parameter("ISPINTTYPE", theInspection.IntType));
                    cmd.Parameters.Add(new iDB2Parameter("ISPINTLEVL", theInspection.IntLevel));
                    cmd.Parameters.Add(new iDB2Parameter("ISPINTUPH", theInspection.IntUphol));
                    cmd.Parameters.Add(new iDB2Parameter("ISPSEATSUS", theInspection.SeatSus));
                    cmd.Parameters.Add(new iDB2Parameter("ISPINTCOLR", theInspection.IntColor));
                    cmd.Parameters.Add(new iDB2Parameter("ISPPAINT", theInspection.Color));
                    //cmd.Parameters.Add(new iDB2Parameter("ISPNEWPNT", theInspection.Nupaint));
                    cmd.Parameters.Add(new iDB2Parameter("ISPMIRRORS", theInspection.MirrorsHt));
                    cmd.Parameters.Add(new iDB2Parameter("ISPMIRRPWR", theInspection.MirrorsPwr));
                    cmd.Parameters.Add(new iDB2Parameter("ISPRADIO6", theInspection.RadNone));
                    cmd.Parameters.Add(new iDB2Parameter("ISPRADIO2", theInspection.RadCass));
                    cmd.Parameters.Add(new iDB2Parameter("ISPRADIO3", theInspection.RadCD));
                    cmd.Parameters.Add(new iDB2Parameter("ISPRADIO1", theInspection.RadFM));
                    cmd.Parameters.Add(new iDB2Parameter("ISPRADIO5", theInspection.RadSatelite));
                    cmd.Parameters.Add(new iDB2Parameter("ISPRADIO4", theInspection.RadWB));
                    cmd.Parameters.Add(new iDB2Parameter("ISPENGFAMC", theInspection.EngFamilyCodes));
                    cmd.Parameters.Add(new iDB2Parameter("ISPENGHOUR", theInspection.EngHrs));
                    cmd.Parameters.Add(new iDB2Parameter("ISPHPECU", theInspection.HPecu));
                    cmd.Parameters.Add(new iDB2Parameter("ICARFAX", theInspection.HistRptReviewed));
                    //cmd.Parameters.Add(new iDB2Parameter("ICLEANDEC", theInspection.CleanIdleDecal));
                    cmd.Parameters.Add(new iDB2Parameter("ISPTRECDT", theInspection.TitleReceivedDate));
                    cmd.Parameters.Add(new iDB2Parameter("ISPODOM", theInspection.Odometer));
                    cmd.Parameters.Add(new iDB2Parameter("ISPECU", theInspection.ECUint));

                    if (bIsNew)
                    {
                        cmd.Parameters.Add(new iDB2Parameter("ISPUSERNUM", HttpContext.Current.Session["uID"].ToString()));
                        cmd.Parameters.Add(new iDB2Parameter("REQID1", HttpContext.Current.Session["uID"].ToString()));
                        cmd.Parameters.Add(new iDB2Parameter("ISPREQDT1", ArrowGlobalFunc.convertDateToInt(DateTime.Now.ToShortDateString())));
                    }

                    try
                    {
                        cmd.ExecuteNonQuery();  <---HERE: BOOM! and then nada/nunca/zip/zero
                    }
                    catch (Exception ex)
                    {
                    }
                }
            }
        }

Open in new window

LVL 1
Michael SterlingWeb Applications DeveloperAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Michael SterlingWeb Applications DeveloperAuthor Commented:
I was able to get this far, but not sure what this means or how to proceed with resolving this. Help please?
javaScriptError.PNG
0
balderCommented:
I guess you are developing this in visual studio, if so then:
* put a breakpoint on the cmd.ExecuteNonQuery() line
* run the app til it hit the breakpoint
* in visual studio Debug->Exceptions : Break when an exception is thrown, enable C++ Exceptions, Common Language Exceptions, Win32 Exceptions
* confirm that Tools->Options : Debugging General, Enable Just My Code is unchecked
* confirm that your projects properties for Web app has enabled ASP.NET og Native Code debuggers
* continue running your app

The app should now automatically break where the error is.
0
käµfm³d 👽Commented:
You're swallowing the exception in lines 174 - 176, so how would you possibly know what's wrong? Have you inspected "ex" when the exception is raised?
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Michael SterlingWeb Applications DeveloperAuthor Commented:
Thanks
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
C#

From novice to tech pro — start learning today.