Extract Entities using Layer

[amitnkukanur]

Hello To All,

I am doing a project where i am required to extract data from autocad files layer wise.

I straight away extracted data from Autocad database by bounding box concept which gave me results in co-ordinates and entity names such as lwpolyline, text,dbtext... etc

But now i also have to extract data from Autocad based on layer concept which include coordinates, type of data such as text, polyline,spline.

This extraction i am little confident to do, if some one gives me idea this would be helpfull.

Regards,

Rishikesh

[Anonymous · Accepted solution]

Hi Rishikesh. if I understand you right,

you can use selection set with layers filter:
 /// <summary>
        /// return selection set with filter of layers
        /// </summary>
        /// <param name="layers">Layers name string collection</param>
        /// <returns>Selection set</returns>
        static public PromptSelectionResult SelectEntitiesByLayers(stringCollection layers)
        {
            Editor ed = acadApp.DocumentManager.MdiActiveDocument.Editor;
            Database db = HostApplicationServices.WorkingDatabase;

            // Build a conditional filter list so that only
            // entities with the specified properties are
            // selected
            int i = 0;
            TypedValue[] tvs = new TypedValue[1];
            tvs[0] = new TypedValue((int)DxfCode.Operator, "<or");
            foreach (string lay in layers)
            {
                //i = tvs.Length;
                //TypedValue[] temp = new TypedValue[tvs.Length + 4];
                TypedValue[] temp = new TypedValue[tvs.Length + 1];
                if (tvs != null)
                    Array.Copy(tvs, temp, Math.Min(tvs.Length, temp.Length)); //VB redim preserve
                tvs = temp;
                //tvs[i + 1] = new TypedValue((int)DxfCode.Operator, "<and");
                //tvs[i + 2] = new TypedValue((int)DxfCode.LayerName, lay);
                tvs[i + 1] = new TypedValue((int)DxfCode.LayerName, lay);
                //tvs[i + 3] = new TypedValue((int)DxfCode.Operator, "and>");
                i++;
            }
            i = tvs.Length;
            //TypedValue[] temp1 = new TypedValue[tvs.Length + 2];
            TypedValue[] temp1 = new TypedValue[tvs.Length + 1];
            if (tvs != null)
                Array.Copy(tvs, temp1, Math.Min(tvs.Length, temp1.Length));
            tvs = temp1;
            //tvs[i + 1] = new TypedValue((int)DxfCode.Operator, "or>");
            tvs[i] = new TypedValue((int)DxfCode.Operator, "or>");

            SelectionFilter sf = new SelectionFilter(tvs);
            PromptSelectionResult psr = ed.SelectAll(sf);

            return psr;
            //  ed.WriteMessage("\nFound {0} entit{1}.", psr.Value.Count, (psr.Value.Count == 1 ? "y" : "ies"));

        }

[amitnkukanur]

Perfect