Create Layer and Line C#

[k005]

Hello

I want to create a command that draws Line by Layer.

sample:
Layer name: Grobeton
Layer Color: 2

osnap : Intersection,MidPoint,EndPoint  = will be marked

and I will draw a line that will be active with this layer ... How can I do this?

Thanks.

[essam-salah]

Hi @k005 

so you want to draw a line in a specific layer? and give it a specific color ?

and you want to programmatically activate 2D Object Snaps: Intersection, MidPoint, EndPoint? 

[k005]

Hi @essam-salah 

Yes that's right

[essam-salah]

@k005 

so why you don't do it manually: set the current layer to the layer you want and OSnap you want?

what is the point?

give example please

[k005]

for example :

I'll go over an existing drawing. and this will be on the layer I want. osnap, on the other hand, is just to activate object

capture for the moment. it is ok even if it is not ..

[essam-salah]

@k005 

not clear actually,

so try to give a real example with:

INPUT: ...

OUPUT: ...

[essam-salah]

or screen shot

[k005]

@essam-salah 

I don't think screen recording is needed.

I just want to do this: create a layer that does not exist in the dwg file (give it color) and draw a line with it. so much.

osnap automatically catches the point I mentioned, better if it is activated.

[k005]

@essam-salah 

Even if the layer is present, it doesn't matter. let it occur again. according to the color I set

[essam-salah]

@k005 

got you

[essam-salah]

hi @k005 

try this:

using aApp = Autodesk.AutoCAD.ApplicationServices;

[CommandMethod("cieCreateLayer")]
        public static void CreateLayer()
        {
            var doc = aApp.Application.DocumentManager.MdiActiveDocument;
            var db = doc.Database;
            var editor = doc.Editor;

            // ask user for layer name
            var promptResult = editor.GetString("Layer Name:");
            if (promptResult.Status != PromptStatus.OK)
            {
                editor.WriteMessage("\nNo String Found\n");
                return;
            }
            string layerName = promptResult.StringResult;

            // set osnap
            aApp.Application.SetSystemVariable("OSMODE", 32); // Intersection
            aApp.Application.SetSystemVariable("OSMODE", 2); // Mid Point
            aApp.Application.SetSystemVariable("OSMODE", 1); // End Point

            using (var ts = db.TransactionManager.StartTransaction())
            {
                // get layers table
                var layersTable = (LayerTable)ts.GetObject(db.LayerTableId, OpenMode.ForWrite);

                // create layer if not exist
                if (layersTable.Has(layerName) == false)
                {
                    var newLayer = new LayerTableRecord();
                    newLayer.Name = layerName;

                    layersTable.Add(newLayer);
                    ts.AddNewlyCreatedDBObject(newLayer, true);
                }

                // set color
                var layer = (LayerTableRecord)layersTable[layerName].GetObject(OpenMode.ForWrite);
                layer.Color = Color.FromRgb(255, 0, 0);
                // set current layer
                db.Clayer = layer.Id;

                // commit changes
                ts.Commit();
            }
        }

[essam-salah]

@k005 

just replace the osnap 3 lines with:

// set osnap
aApp.Application.SetSystemVariable("OSMODE", 32 | 2 | 1); // Intersection, Mid Point, End Point

just discovered Autodesk.AutoCAD.EditorInput.ObjectSnapMasks is a flags

[k005]

Hi @essam-salah 

so far...

only the command will not exit and the LINE command will run.

And it shouldn't ask for the layer name. It should be fixed.

So we will enter the layer names in C # code

[essam-salah]

@k005 

[CommandMethod("cieCreateLayer")]
        public static void CreateLayer()
        {
            var doc = aApp.Application.DocumentManager.MdiActiveDocument;
            var db = doc.Database;
            var editor = doc.Editor;

            string layerName = "Grobeton";

            // set osnap
            aApp.Application.SetSystemVariable("OSMODE", 32 | 2 | 1); // Intersection, Mid Point, End Point            

            using (var ts = db.TransactionManager.StartTransaction())
            {
                // get layers table
                var layersTable = (LayerTable)ts.GetObject(db.LayerTableId, OpenMode.ForWrite);

                // create layer if not exist
                if (layersTable.Has(layerName) == false)
                {
                    var newLayer = new LayerTableRecord();
                    newLayer.Name = layerName;

                    layersTable.Add(newLayer);
                    ts.AddNewlyCreatedDBObject(newLayer, true);
                }

                // set color
                var layer = (LayerTableRecord)layersTable[layerName].GetObject(OpenMode.ForWrite);
                layer.Color = Color.FromRgb(255, 0, 0);
                // set current layer
                db.Clayer = layer.Id;

                // commit changes
                ts.Commit();
            }

            // send Line Cmd
            doc.SendStringToExecute("MULTIPLE LINE ", true, false, false);

        }

[essam-salah]

@k005 

have you tried the last code?

[essam-salah · Accepted solution]

@k005 

[CommandMethod("cieCreateLayer")]
        public static void CreateLayer()
        {
            var doc = aApp.Application.DocumentManager.MdiActiveDocument;
            var db = doc.Database;
            var editor = doc.Editor;

            string layerName = "Grobeton";

            // set osnap
            aApp.Application.SetSystemVariable("OSMODE", 32 | 2 | 1); // Intersection, Mid Point, End Point            

            using (var ts = db.TransactionManager.StartTransaction())
            {
                // get layers table
                var layersTable = (LayerTable)ts.GetObject(db.LayerTableId, OpenMode.ForWrite);

                // create layer if not exist
                if (layersTable.Has(layerName) == false)
                {
                    var newLayer = new LayerTableRecord();
                    newLayer.Name = layerName;

                    layersTable.Add(newLayer);
                    ts.AddNewlyCreatedDBObject(newLayer, true);
                }

                // set color
                var layer = (LayerTableRecord)layersTable[layerName].GetObject(OpenMode.ForWrite);
                layer.Color = Color.FromRgb(255, 0, 0);
                // set current layer
                db.Clayer = layer.Id;

                // commit changes
                ts.Commit();
            }

            // send Line Cmd
            doc.SendStringToExecute("MULTIPLE LINE ", true, false, false);
        }

[k005]

@essam-salah 

Thank you very much. 🤗

I will add a screenshot or a file in my next questions. 🤔