怎么得到一个图层中块的个数
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怎么得到一个图层中块的个数
blocktable bt = (blocktable)trans.getobject(ltr.database.blocktableid, openmode.forwrite); blocktablerecord btr = (blocktablerecord)trans.getobject(bt[blocktablerecord.modelspace], openmode.forwrite); int count = 0; foreach (objectid id in btr) { count++; } 这样得出的是整个图中的所有块书，我就只想得到某一层的，有没有办法？ layertable lt = (layertable)trans.getobject(db.layertableid, openmode.forwrite); layertablerecord ltr = (layertablerecord)trans.getobject(lt[layername], openmode.forwrite);
搞定了，搞个selectionfilter就行