如何将图块替换成dwg文件？

• 回答：

  
      var ent = mxOcx.GetEntity("选择图面的属性块:");
      if(ent == null)
      {
          return;
      }
      if (ent.ObjectName != "McDbBlockReference") {
          alert("选择的对象不是块引用");
      }
      else
      {
          var blkref = ent;
          var sBlkFilePath = mxOcx.GetOcxAppPath() + "\\Blk\\Rect.dwg";
          mxOcx.InsertBlock(sBlkFilePath, "MyBlk2");
  
          var curDatabase = mxOcx.GetDatabase();
          var blkTable = curDatabase.GetBlockTable();
          var myblkRec =  blkTable.GetAt("MyBlk2", false);
          if(myblkRec == null)
          {
              return;
          }
          blkref.BlockTableRecordId = myblkRec.ObjectID;
      }