Print appropriate layer name in dwg file

See more:

C#3.5

AutoCAD

using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Runtime;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace layerlist
{
    public class Class1
    {
        // This method can have any name
        [CommandMethod("DL")]
        public void TestDisplayLayers()
        {
            {
                Document doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
                Database db = doc.Database;
                Editor ed = doc.Editor;
                Transaction tr = doc.Database.TransactionManager.StartTransaction();
                var curSpace = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
                List<string> info = LayersToList(db);

                PromptPointResult ppr;
                PromptPointOptions ppo = new PromptPointOptions("");
                ppo.Message = "\n Select the place for print output:";
                //get the coordinates from user
                ppr = ed.GetPoint(ppo);
                if (ppr.Status != PromptStatus.OK)
                    return;
                Point3d startPoint = ppr.Value.TransformBy(ed.CurrentUserCoordinateSystem);
                //Point3d startPoint1 = startPoint.Subtract();
                Vector3d disp = new Vector3d(0.0, -2.0 * db.Textsize, 0.0);
                Vector3d disp2 = new Vector3d(0.0, -2.0 * db.Textsize, 0.0);

                TextStyleTable ts = (TextStyleTable)tr.GetObject(db.TextStyleTableId, OpenMode.ForRead);
                ObjectId mtStyleid = db.Textstyle;
                if (ts.Has("NAL-TEXT"))
                {
                    mtStyleid = ts["NAL-FORMAT"];
                }
                foreach (string lname in info)
                {
                    MText mtext = new MText();
                    mtext.Location = startPoint;
                    mtext.Width = 75.207;
                    mtext.Height = 1.488;
                    mtext.TextStyleId = mtStyleid;
                    mtext.Contents = "\n" + lname;

                    curSpace.AppendEntity(mtext);
                    tr.AddNewlyCreatedDBObject(mtext, true);
                    db.TransactionManager.QueueForGraphicsFlush();
                    startPoint += disp;
                }
                tr.Commit();
            }
        }

        public List<string> LayersToList(Database db)
        {
            List<string> lstlay = new List<string>();

            LayerTableRecord layer;
            using (Transaction tr = db.TransactionManager.StartOpenCloseTransaction())
            {
                LayerTable lt = tr.GetObject(db.LayerTableId, OpenMode.ForRead) as LayerTable;
                foreach (ObjectId layerId in lt)
                {
                    layer = tr.GetObject(layerId, OpenMode.ForWrite) as LayerTableRecord;
                    lstlay.Add(layer.Name);
                }
            }
            return lstlay;
        }
    }
}

What I have tried:

This is my code which retrieve me the layer name of dwg file but instead of this I want to print only layers which started from NL like NL-log etc.