摘要: 异常出现在frmDownload frd = new frmDownload();frd.ShowDialog();在ArcMap中能正常弹出窗体,点击按钮时显示此异常:object reference not set to an instance of an object网上检索后,基本给的解释都... 阅读全文
posted @ 2015-11-25 14:42 DayDreamInGIS 阅读(942) 评论(0) 推荐(0) 编辑