[Help-glpk] Fwd: RE: RE: RE: Help! AccessViolationException in GLPK

[Heinrich Schuchardt]

Anfang der weitergeleiteten E-Mail

> Von: "Захарова Наталья Иркиновна"
> Datum: 13. Oktober 2016 um 15:07
> An: "Heinrich Schuchardt" <address@hidden>
> Betreff: RE: RE: RE: Help! AccessViolationException in GLPK
> 
> Thank you!
> 
> -----Original Message-----
> From: Heinrich Schuchardt [mailto:address@hidden 
> Sent: Thursday, October 13, 2016 4:42 PM
> To: Захарова Наталья Иркиновна
> Subject: Re: RE: RE: Help! AccessViolationException in GLPK
> 
> GLPK.glp_add_cols(lp, varcounter);
>  creates not one column but as many columns as varcounter specifies.
> 
> Afterwards you set the "kind" of a single column with index varcounter.
> 
> Best regards
> 
> Heinrich Schuchardt
> 
> http://www.xypron.de
> 
> Am 13.10.16 um 13:34 schrieb Захарова Наталья Иркиновна
> 
> > Thank you!
> > I understand that, and create a variable with the number 1.
> > The problem occurs at 4965 variable. And this is not the last variable. And 
> > each time is a different number.
> > 
> > while (dateFrom <= dateTo)
> >                 {
> >                     for (var hour = 0; hour < 24; hour++)
> >                     {
> >                             var paramDate = 
> > station.Compound.GetParamForDate(dateFrom);
> >                             var paramHour = paramDate.ParamByHour(hour);
> >                             varCounter++;
> >                             paramHour.PriznakDozagruzki = new 
> > PriznakDozagruzki()
> >                             {
> >                                 ParamType = TipDozagruzki.Pmax,
> >                                 Day = dateFrom,
> >                                 Hour = hour,
> >                                 Position = varCounter,
> >                                 StationID = station.ID
> >                             };
> >                             taskGLPK.AddVariable(varCounter, lp, 
> > GLPK.GLP_BV);
> > 
> >                         station.FuelInfo.ToList()
> >                             .ForEach(p =>
> >                                      {
> >                                          varCounter++;
> >                                          var b = new RashodTopliva()
> >                                          {
> >                                              Day = dateFrom,
> >                                              Hour = hour,
> >                                              Position = varCounter,
> >                                              Station = station,
> >                                              FuelInfo = p,
> >                                          };
> > 
> >                                          p.RashodTopliva.Add(b);
> >                                          taskGLPK.AddVariable(varCounter, 
> > lp, GLPK.GLP_CV);
> >                                      });
> >                     }
> >                     dateFrom = dateFrom.AddDays(1);
> >                 }
> > 
> > 
> >         public void AddVariable(int varcounter, glp_prob lp, int type)
> >         {
> >             GLPK.glp_add_cols(lp, varcounter);
> >             GLPK.glp_set_col_kind(lp, varcounter, type);
> >         }
> > 
> > -----Original Message-----
> > From: Heinrich Schuchardt [mailto:address@hidden
> > Sent: Thursday, October 13, 2016 4:30 PM
> > To: Захарова Наталья Иркиновна
> > Subject: Re: RE: Help! AccessViolationException in GLPK
> > 
> > Hello Natalia,
> > 
> > could you please send me a full example showing the problem.
> > 
> > Best regards
> > 
> > Heinrich Schuchardt
> > 
> > http://www.xypron.de
> > 
> > Am 13.10.16 um 12:32 schrieb Захарова Наталья Иркиновна
> > 
> > > Hello!
> > > I try use glpk for c#.
> > > I'm widows 10 and VS 2015 amd 64-bit Windows. But my application is 32 
> > > bit.
> > > I add libglpk-cli.dll to project and add libglpk_cli_native and glpk_4_60 
> > > to /bin directory.
> > > Test to solve was excellent.
> > > When I try use glpk in me application
> > > 
> > > In GLPK.glp_add_cols(lp, varcounter), when varcounter= big number, 
> > > for example varcounter=4961 I get exception 'GLPK.glp_add_cols(lp, 
> > > varcounter)' threw an exception of type 'System.AccessViolationException'
> > >     Data: {System.Collections.ListDictionaryInternal}
> > >     HResult: -2147467261
> > >     HelpLink: null
> > >     InnerException: null
> > >     Message: "Attempted to read or write protected memory. This is often 
> > > an indication that other memory is corrupt."
> > >     Source: "libglpk-cli"
> > >     StackTrace: "   at org.gnu.glpk.GLPKPINVOKE.glp_add_cols(HandleRef 
> > > jarg1, Int32 jarg2)\r\n   at org.gnu.glpk.GLPK.glp_add_cols(glp_prob P, 
> > > Int32 ncs)"
> > >     TargetSite: {Int32
> > > glp_add_cols(System.Runtime.InteropServices.HandleRef, Int32)}
> > > 
> > > 
> > > Help me, please!
> > > 
> > > 
> > > 
> > > ---
> > > With regards, Natalia