COGO creation Fatal exception !!

[raghulan]

Hello All,

  Here is what I am trying to do,

I am working on an application, where the user would would choose 

Category of point

Sub-category of point

Then click on a Button

1. Which then querry SQLite DB based on the querry a COGO point with relevent RDesc in inserted.

2. A suitable block is inserted in the same location.

3. Updates the handle for the block to the COGO UDP

Now I have commeted the last part of updating UDP.

I have issue inserting COGO.

Sometimes it works some time it throws fatal exception, object instance is not set. I am unable to catch the fatal exception. 

Mini Dump - The thread tried to read from or write to a virtual address for which it does not have the appropriate access

Here is the code,

Global.variables.spt_current_COGO_pt = null;
                PromptPointOptions ppo = new PromptPointOptions("\nSelect the location to Create a Smart Point : ");
                PromptPointResult ppr = Global.variables.ed.GetPoint(ppo);

                if (ppr.Status != PromptStatus.OK)
                    return false;
                Point3d pt_loc = ppr.Value;
                //start Transaction

                using (Transaction tr = db.TransactionManager.StartTransaction())
                {
                    try
                    {
                        // All points in a document are held in a CogoPointCollection object
                        // We can access CogoPointCollection through the CivilDocument.CogoPoints property
                        CogoPointCollection cogo_pt_coll = CivilApplication.ActiveDocument.CogoPoints;
                        
                        ObjectId pt_id = cogo_pt_coll.Add(pt_loc);
                        CogoPoint spt_current_COGO_pt = pt_id.GetObject(Autodesk.AutoCAD.DatabaseServices.OpenMode.ForWrite) as CogoPoint;
                        
                    }
                    catch (CivilException cex)
                    {
                        Helper.Logger.SPT_log_it("COGO Creation Error (cex) : " + cex.ToString());
                    }
                    tr.Commit();
                }
            }

[raghulan]

Any expert advice on this.!!!

[Partha.Sarkar]

Hi Raghu,

You need to give us a reproduce-able steps and associated DWG (if any) to investigate further.

Thanks,

[raghulan]

Thanks Partha,

Will send you that shortly.

[raghulan]

Partha, 

I fixed the issue!..

The problem was 

When I tried to create a COGO and add infromation.

I tried to do all of them within one transaction.

After I split that into two transactions it worked fine.

Thanks for your respoense.!

[raghulan]

Partha, 

 Eventhough the issue is fixed.

I have another problem, when I run the command and create few COGO points.

After which if I do UNDO and try to create objects again..it gives me fatal error.

How do I fix this issue.

should I turn of UNDo during the command.

or anythign ideas...