c# cad二次开发划线

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Autodesk.AutoCAD.Interop;

namespace huaxian
{
    public partial class Form1 : Form
    {
        private AcadApplication a = new AcadApplication（）;
        public Form1（）
        {
            InitializeComponent（）;
            a.Visible = true;
           
        }
        //private AcadApplication a;
        //private void Form1_Load（object sender EventArgs e）
        //{
        //    AcadApplication a= new AcadApplication（）;
        //    a.Visible = true;
           
        //}
      
        
                private void button1_Click（object sender EventArgs e）

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       8704  2017-04-19 11:09  huaxian\huaxian\bin\Debug\huaxian.exe

     文件      24064  2017-04-19 11:09  huaxian\huaxian\bin\Debug\huaxian.pdb

     文件      14328  2017-04-19 11:10  huaxian\huaxian\bin\Debug\huaxian.vshost.exe

     文件        490  2016-05-25 10:56  huaxian\huaxian\bin\Debug\huaxian.vshost.exe.manifest

     文件       3584  2017-04-17 16:14  huaxian\huaxian\bin\Debug\Interop.ACFOCUSCTRLLib.dll

     文件      53248  2017-04-17 16:14  huaxian\huaxian\bin\Debug\Interop.DwfViewerExe.dll

     文件      28672  2017-04-17 16:14  huaxian\huaxian\bin\Debug\Interop.MPolygonComLib.dll

     文件       1878  2017-04-19 11:09  huaxian\huaxian\Form1.cs

     文件       2955  2017-04-19 11:07  huaxian\huaxian\Form1.Designer.cs

     文件       5814  2017-04-19 11:06  huaxian\huaxian\Form1.resx

     文件       5558  2017-04-17 16:27  huaxian\huaxian\huaxian.csproj

     文件       1294  2017-04-19 11:10  huaxian\huaxian\obj\Debug\huaxian.csproj.FileListAbsolute.txt

     文件        847  2017-04-19 11:06  huaxian\huaxian\obj\Debug\huaxian.csproj.GenerateResource.Cache

     文件        900  2017-04-17 16:14  huaxian\huaxian\obj\Debug\huaxian.csproj.ResolveComReference.cache

     文件       8704  2017-04-19 11:09  huaxian\huaxian\obj\Debug\huaxian.exe

     文件        180  2017-04-19 11:06  huaxian\huaxian\obj\Debug\huaxian.Form1.resources

     文件      24064  2017-04-19 11:09  huaxian\huaxian\obj\Debug\huaxian.pdb

     文件        180  2017-04-17 16:27  huaxian\huaxian\obj\Debug\huaxian.Properties.Resources.resources

     文件       3584  2017-04-17 16:14  huaxian\huaxian\obj\Debug\Interop.ACFOCUSCTRLLib.dll

     文件      53248  2017-04-17 16:14  huaxian\huaxian\obj\Debug\Interop.DwfViewerExe.dll

     文件      28672  2017-04-17 16:14  huaxian\huaxian\obj\Debug\Interop.MPolygonComLib.dll

     文件        511  2017-04-17 16:27  huaxian\huaxian\Program.cs

     文件       1346  2017-04-17 16:07  huaxian\huaxian\Properties\AssemblyInfo.cs

     文件       2864  2017-04-17 16:07  huaxian\huaxian\Properties\Resources.Designer.cs

     文件       5612  2017-04-17 16:07  huaxian\huaxian\Properties\Resources.resx

     文件       1092  2017-04-17 16:07  huaxian\huaxian\Properties\Settings.Designer.cs

     文件        249  2017-04-17 16:07  huaxian\huaxian\Properties\Settings.settings

     文件        911  2017-04-17 16:07  huaxian\huaxian.sln

    ..A..H.     18944  2017-04-19 11:13  huaxian\huaxian.suo

     目录          0  2017-04-19 09:02  huaxian\huaxian\obj\Debug\Refactor

............此处省略11个文件信息