AutoCAD .NET开发指南-2012版与源码

using System;
using System.Runtime.InteropServices;
using Autodesk.AutoCAD.Interop;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Runtime;




namespace chapter_01
{
    public class chp_01
    {

        //从模型空间检索实体对象
 
        [CommandMethod（“ListEntities“）]
        public static void ListEntities（）
        {
          // 获取当前数据库，启动事务
          Document acDoc = Application.DocumentManager.MdiActiveDocument;
          Database acCurDb = acDoc.Database;
 
          using （Transaction acTrans = acCurDb.TransactionManager.StartTransaction（））
          {
              // 以读模式打开块表
              BlockTable acBlkTbl;
              acBlkTbl = acTrans.Getobject（acCurDb.BlockTableId
                                           OpenMode.ForRead） as BlockTable;
 
              // 以读模式打开块表记录模型空间
              BlockTableRecord acBlkTblRec;
              acBlkTblRec = acTrans.Getobject（acBlkTbl[BlockTableRecord.ModelSpace]
                                              OpenMode.ForRead） as BlockTableRecord;
 
              int nCnt = 0;
              acDoc.Editor.WriteMessage（“
Model space objects: “）;
 
              // 遍历模型空间里的每个对象，并
              // 显示找到的对象的类型
              foreach （objectId acObjId in acBlkTblRec）
              {
                  acDoc.Editor.WriteMessage（“
“ + acObjId.objectClass.DxfName）;
 
                  nCnt = nCnt + 1;
              }
 
              // 如果没发现对象则显示提示信息
              if （nCnt == 0）
              {
                  acDoc.Editor.WriteMessage（“
 No objects found“）;
              }
 
              // 关闭事务
          }
        }


        //新建一个图层并将其添加到图层表

        [CommandMethod（“AddMylayer“）]
        public static void AddMylayer（）
        {
            // 获取当前文档和数据库，并启动事务；
            Document acDoc = Application.DocumentManager.MdiActiveDocument;
            Database acCurDb = acDoc.Database;

            using （Transaction acTrans = acCurDb.TransactionManager.StartTransaction（））
            {
                // 返回当前数据库的图层表
                layerTable acLyrTbl;
                acLyrTbl = acTrans.Getobject（acCurDb.layerTableId
                                             OpenMode.ForRead） as layerTable;

                // 检查图层表里是否有图层Mylayer
                if （acLyrTbl.Has（“Mylayer“） != true）
                {
                    // 以写模式打开图层表
                    acLyrTbl.UpgradeOpen（）;

                    // 新创建一个图层表记录，并命名为”Mylayer”
                    layerTableRecord acLyrTblRec = new layerTableRecord（）;
                    acLyrTblRec.Name = “Mylayer“;

                    // 添加新的图层表记录到图层表，添加事务
                    acLyrTbl.Add（acLyrTblRec）;
                    acTrans.AddNewlyCreatedDBobject（acLyrTblRec true）;

                    //提交修改
                    acTrans.Commit（）;
                }

                // 关闭事务，回收内存；
            }
        }


    

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     文件      12288  2013-12-12 17:37  chapter_04chapter_04inDebugchapter_04.dll

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     文件       3002  2019-04-11 16:34  chapter_04chapter_04chapter_04.csproj

     文件      25530  2013-12-12 17:37  chapter_04chapter_04Class1.cs

     文件        538  2013-12-12 17:37  chapter_04chapter_04objDebugchapter_04.csproj.FileListAbsolute.txt

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     文件      22016  2013-12-12 17:37  chapter_04chapter_04objDebugchapter_04.pdb

     文件       6710  2019-04-11 16:34  chapter_04chapter_04objDebugDesignTimeResolveAssemblyReferencesInput.cache

     文件          0  2019-04-11 16:34  chapter_04chapter_04objDebugTemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs

     文件          0  2019-04-11 16:34  chapter_04chapter_04objDebugTemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs

     文件          0  2019-04-11 16:34  chapter_04chapter_04objDebugTemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs

     文件       1352  2013-12-10 20:02  chapter_04chapter_04PropertiesAssemblyInfo.cs

     文件        920  2013-12-10 20:02  chapter_04chapter_04.sln

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     文件        146  2014-01-06 10:22  chapter_05chapter_05inDebugacad.err

     文件      16896  2014-01-06 17:39  chapter_05chapter_05inDebugchapter_05.dll

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     文件       3002  2019-04-11 16:35  chapter_05chapter_05chapter_05.csproj

     文件      36563  2014-01-06 17:39  chapter_05chapter_05Class1.cs

     文件        950  2014-01-06 17:39  chapter_05chapter_05objDebugchapter_05.csproj.FileListAbsolute.txt

     文件      16896  2014-01-06 17:39  chapter_05chapter_05objDebugchapter_05.dll

     文件      26112  2014-01-06 17:39  chapter_05chapter_05objDebugchapter_05.pdb

     文件       5853  2014-01-06 17:39  chapter_05chapter_05objDebugDesignTimeResolveAssemblyReferencesInput.cache

     文件       1352  2013-12-14 14:59  chapter_05chapter_05PropertiesAssemblyInfo.cs

     文件        920  2013-12-14 14:59  chapter_05chapter_05.sln

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     文件       1633  2014-01-22 13:38  chapter_06chapter_06AcedSetCurrentVPort.txt

     文件      10752  2014-01-23 17:10  chapter_06chapter_06inDebugchapter_06.dll

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