在autocad.net中加载lisp程序的方法

using Autodesk.AutoCAD.Windows;
using Autodesk.AutoCAD.Runtime;
using System.Windows.Forms;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.ApplicationServices;
using System;
using System.Collections;
using app = Autodesk.AutoCAD.ApplicationServices.Application;
 
namespace test
{
        [CommandMethod("test")]
        public void test()
        {
            //设置标记并发送PLINE         
            Document curAcadDoc = app.DocumentManager.MdiActiveDocument;
            string lispPath = "d:/1.lsp";
            string loadStr = String.Format("(load \"{0}\")  tttt\n", lispPath);
            curAcadDoc.SendStringToExecute(loadStr, false, false, false);
        }
}