This code shows output in command prompt but I want output on my dwg file .

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 allhatch
{
    public class Class1
    {
        [CommandMethod("HA")]
        public static void FindAllHatches()
        {
            Document acDoc = Application.DocumentManager.MdiActiveDocument;

            acDoc.Editor.WriteMessage("\nSearching for Hatches");

            var db = acDoc.Database;
            using (Transaction transaction = db.TransactionManager.StartTransaction())
            {
                ObjectId idModelSpace = SymbolUtilityServices.GetBlockModelSpaceId(db);

                BlockTableRecord modelSpace = transaction.GetObject(idModelSpace, OpenMode.ForRead) as
                    BlockTableRecord;

                foreach (var objId in modelSpace)
                {
                    var entity = transaction.GetObject(objId, OpenMode.ForRead);
                    Hatch hatch = entity as Hatch;
                    if (hatch == null)
                        continue; //not hatch

                    acDoc.Editor.WriteMessage("\nFound Hatch Area={0}", hatch.Area);
                }
            }
        }
    }
}