topic Re: My Polyline Hatch code has terrible error and does not work. in .NET Forum

My Polyline Hatch code has terrible error and does not work.

MarkJamesRogolino — Sat, 20 Aug 2022 06:21:15 GMT

Hello all the thankful persons.

Now I am making polyline hatch application but it does not work and error.

I am stunned because of this problem.

Followings are my error image and code.

I hope someone can help me. Thanks in advance.

public static void Hatch() { var documentManager = Application.DocumentManager; var currentDocument = documentManager.MdiActiveDocument; var db = currentDocument.Database; var ed = currentDocument.Editor; using (var tr = db.TransactionManager.StartOpenCloseTransaction()) { var blockTable = (BlockTable)tr.GetObject(db.BlockTableId, OpenMode.ForRead); foreach (ObjectId btrId in blockTable) { var btr = (BlockTableRecord)tr.GetObject(btrId, OpenMode.ForWrite); var PlineCls = RXObject.GetClass(typeof(Polyline)); if (btr.IsLayout) { foreach (ObjectId id in btr) { if (id.ObjectClass == PlineCls) { var pline = (Polyline)tr.GetObject(id, OpenMode.ForRead); string curlay = pline.Layer; if (IsreqHatch(curlay) == true) { ObjectIdCollection acObjIdColl = new ObjectIdCollection(); acObjIdColl.Add(pline.ObjectId); Hatch acHatch = new Hatch(); btr.AppendEntity(acHatch); tr.AddNewlyCreatedDBObject(acHatch, true); acHatch.SetDatabaseDefaults(); acHatch.SetHatchPattern(HatchPatternType.PreDefined, "ANSI31"); acHatch.Associative = true; acHatch.HatchStyle = HatchStyle.Ignore; acHatch.AppendLoop(HatchLoopTypes.Outermost, acObjIdColl); acHatch.EvaluateHatch(true); } } } } } tr.Commit(); } }

Re: My Polyline Hatch code has terrible error and does not work.

_gile — Sat, 20 Aug 2022 12:01:47 GMT

Hi,

You have to set the hatch pattern before adding it to the Database.

One more time, build a little method to hatch a single polyline so that you can test-it and debug it by selection a single polyline with a simple test command instead of running your method which iterates through each entity of each layout.

private static void HacthPolyline(Polyline pline, BlockTableRecord btr, Transaction tr) { var ids = new ObjectIdCollection(); ids.Add(pline.Id); var hatch = new Hatch { Layer = pline.Layer }; hatch.SetHatchPattern(HatchPatternType.PreDefined, "ANSI31"); btr.AppendEntity(hatch); tr.AddNewlyCreatedDBObject(hatch, true); hatch.Associative = true; hatch.AppendLoop(HatchLoopTypes.Default, ids); hatch.EvaluateHatch(true); }

And, when you're satified with this method, you can integrate it into your main method:

Re: My Polyline Hatch code has terrible error and does not work.

MarkJamesRogolino — Sat, 20 Aug 2022 12:24:00 GMT

well done. Thanks, gile. but is it possible to manage spacing?

Re: My Polyline Hatch code has terrible error and does not work.

_gile — Sat, 20 Aug 2022 12:38:27 GMT

You can set the Hatch poperties when you create the new instance:

var hatch = new Hatch { Layer = pline.Layer, PatternScale = 2.0 };

var hatch = new Hatch(); hatch.Layer = pline.Layer; hatch.PatternScale = 2.0;

Re: My Polyline Hatch code has terrible error and does not work.

MarkJamesRogolino — Sat, 20 Aug 2022 13:29:46 GMT

You are very very talented person.

Re: My Polyline Hatch code has terrible error and does not work.

kerry_w_brown — Sat, 20 Aug 2022 22:52:24 GMT

and very generous !

Re: My Polyline Hatch code has terrible error and does not work.

MarkJamesRogolino — Wed, 24 Aug 2022 09:27:17 GMT

Hi, _gile. I am currently getting this error.

could you tell me why this error occurs?

I hope your answer.

Re: My Polyline Hatch code has terrible error and does not work.

_gile — Wed, 24 Aug 2022 15:27:22 GMT

What if you try to hatch this polyline with the native command ?