获取断面线的范围

参考代码

   1: //获取绘制要素的整体范围

   2: IEnumElement pEnumElem;

   3: IGraphicsContainer graphicsContainer = pMap as IGraphicsContainer;

   4: IGraphicsContainerSelect pGraphicsContainerSelect = pMap as IGraphicsContainerSelect;

   5: pGraphicsContainerSelect.SelectAllElements();

   6: pEnumElem = pGraphicsContainerSelect.SelectedElements;

   7: IElement ele = pEnumElem.Next();

   8: IEnvelope env = new EnvelopeClass();

   9: while (ele != null)

  10: {

  11:     IGeometry geo = ele.Geometry;

  12:     ele = pEnumElem.Next();

  13:     env.Union(geo.Envelope);

  14: }

  15: pActiveView.Extent = env;

  16: pGraphicsContainerSelect.UnselectAllElements();

最后获取的env就是所需要的公共外接矩形。

参考文章：

获取IMap上绘制的Element的区域范围