使用方法如下：
可以搜尋多段線、圓、塊參照、擴充套件資料，可以指定圖層、線型、塊名等
以下是實體搜尋類
* @author xuhaiyan
* @date 2013-02-27
* @version 1.0
* @description
* @dependence .net 2.0
*/ using system;
using system.collections.generic;
using system.text;
using autodesk.autocad.databaseservices;
using comalg = common.algorithm;
using autodesk.autocad.editorinput;
using autodesk.autocad.geometry;
namespace common.acad08
public class searchcondition
set
}public string layername
set
}public string linetypename
set
}public string blockname
set
}public searchcondition()
public searchcondition(primitivetype entitytype)
public searchcondition(primitivetype entitytype, string layername)
public searchcondition(string layername, string linetypename)
public searchcondition(primitivetype entitytype, string layername, string linetypename)
public selectionfilter getselectionfilter()
if ("" != m_linetypename)
if ("" != m_blockname)
if (0 != m_entitytype)
else if (pt == primitivetype.polyline)
else if (pt == primitivetype.blockreference)
else if (pt == primitivetype.circle)}}
if (sb.length > 0)
}if (values.count > 0)
return m_selectionfilter;}}
public class entitysearch
set
}public entitysearch()
public listgetsearchresult()
}return re;
}public listgetsearchresult(point3dcollection windowpolygon)
}return re;
}public listgetsearchresultaspline()}}
}}return re;
}public listgetsearchresultasblockrefrence()}}
}}return re;
}public listgetsearchresultascircle()}}
}}return re;
}private common.algorithm.circle converttocircle(circle circle)
}return re;
}public comalg.blockreference converttoblockreference(blockreference blockref)
}return re;
}public comalg.polyline2d converttopline(line line)
public comalg.polyline2d converttopline(polyline pl)
comalg.polyline2d pline = new common.algorithm.polyline2d(pts);
pline.objectid = pl.objectid.tostring();
pline.linetypename = pl.linetype;
pline.linewidth = cadbase.converttolineweightvalue(pl.lineweight);
pline.constantwidth = pl.constantwidth;
pline.linescale = pl.linetypescale;
return pline;
}private dictionaryconvertxdatatoxdatastruct(resultbuffer resultbuffer)
caxdata = new common.algorithm.xdata();
}else if (tvs[i].typecode == (short)dxfcode.extendeddataasciistring)
}return re;}}
return re;
}private comalg.point2d converttopoint2d(point3d pt3d)}}
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