05 2008 档案

基于ArcEngine实现分组统计面积的功能
摘要：基于ArcEngine实现分组统计面积的功能IQueryFilter qf=new QueryFilterClass(); qf.subfield="qsdwdm,qsxz,dlbm,sum(mj) as mj,sum(tkmj) as tkmj"qf .whereclause=""; (IQueryFilterDefinition)qf.PostfixClause="group by qsdwdm,qsxz,blbm order by blbm "; IFeautureClass fc=OpenFeatureClass(LayerN 阅读全文
posted @ 2008-05-09 19:58 sqlite例子 阅读(373) 评论(0) 推荐(0)