好久没有写博文了，这段时间相对空闲一点，把AE数据编辑实现总结下。
要编辑要素，首先要选中要素，按shift键进行多选，按esc键清空选择。
个人了解的选择高亮显示有两种方式，都是在public override void OnMouseDown(int Button, int Shift, int X, int Y)事件中处理实现：
1、 IFeatureSelection 这个要求明确选择的图层
IPoint pPoint = pActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y); IEnvelope pEnvelope; double tol = 20; pEnvelope = pPoint.Envelope; pEnvelope.Width = pEnvelope.Width + tol; pEnvelope.Height = pEnvelope.Height + tol; pEnvelope.CenterAt(pPoint); ISpatialFilter pSpatialFilter; pSpatialFilter = new SpatialFilterClass(); pSpatialFilter.Geometry = pEnvelope; pSpatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects; IFeatureSelection pFeatureSelection; pFeatureSelection = ucDrawPanel.currentFeatureLayer as IFeatureSelection; IFeature pFeature; ucDrawPanel.unionFeature = new List<IFeature>();//实例化合并要素集 if (Shift == 1) { if (ucDrawPanel.currentFeatureLayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryPolyline) { pFeatureSelection.SelectFeatures(pSpatialFilter, esriSelectionResultEnum.esriSelectionResultAdd, true); ICursor pCursor; pFeatureSelection.SelectionSet.Search(null, false, out pCursor); } } else { pActiveView.FocusMap.ClearSelection(); pFeatureSelection.SelectFeatures(pSpatialFilter, esriSelectionResultEnum.esriSelectionResultNew, true); ICursor pCursor; pFeatureSelection.SelectionSet.Search(null, false, out pCursor); } pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, ucDrawPanel.currentFeatureLayer, null); //高亮显示出来 ISimpleFillSymbol iFillSymbol; ISymbol iSymbol; IRgbColor iRgbColor; iFillSymbol = new SimpleFillSymbol(); iFillSymbol.Style = esriSimpleFillStyle.esriSFSSolid; iRgbColor = new RgbColor(); iRgbColor.Green = 128; iFillSymbol.Color = iRgbColor; iSymbol = (ISymbol)iFillSymbol; iSymbol.ROP2 = esriRasterOpCode.esriROPNotXOrPen; IEnumFeature pEnumFeature = pActiveView.FocusMap.FeatureSelection as IEnumFeature; pEnumFeature.Reset(); pFeature = pEnumFeature.Next(); //选中要素高亮显示 if (pFeature != null) { IGeometry pGeometry = pFeature.Shape; ITopologicalOperator pTop = pGeometry as ITopologicalOperator; while (pFeature != null) { ucDrawPanel.unionFeature.Add(pFeature); pGeometry = pTop.Union(pFeature.Shape); pTop = pGeometry as ITopologicalOperator; pFeature = pEnumFeature.Next(); } ucDrawPanel.currentFeature = ucDrawPanel.unionFeature[ucDrawPanel.unionFeature.Count - 1]; _mapCtrl.FlashShape(pGeometry, 1, 500, iSymbol); } //清空选择要素 else { pActiveView.FocusMap.ClearSelection(); pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, null, pActiveView.Extent); }
2、 SelectByMap 基于整个地图，当然也可以先将图层的selectable属性动态设置下
if (Button == 1) { //清空地图视图 _mapCtrl.Map.ClearSelection(); IGraphicsContainer pContainer = _mapCtrl.Map as IGraphicsContainer; pContainer.DeleteAllElements(); _mapCtrl.ActiveView.Refresh(); base.OnMouseDown(Button, Shift, X, Y); IActiveView pActiveView = _mapCtrl.ActiveView; IPoint pPoint = pActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y); IPoint TempPoint = pActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X + 5, Y + 5); IEnvelope objEnvelope; double tol = Math.Abs(TempPoint.X - pPoint.X); objEnvelope = pPoint.Envelope; objEnvelope.Width = objEnvelope.Width + tol; objEnvelope.Height = objEnvelope.Height + tol; objEnvelope.CenterAt(pPoint); setSelectable(ucDrawPanel.currentLayerName);//只有当前编辑图层可选 _mapCtrl.Map.SelectByShape((IGeometry)objEnvelope, null, true);//只选择一个要素 pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, null, _mapCtrl.ActiveView.Extent); ucDrawPanel.currentFeatureLayer = GetLayerByName(_mapCtrl, ucDrawPanel.currentLayerName); if (ucDrawPanel.currentFeatureLayer != null) { ucDrawPanel.currentFeature = GetFeatureBySelection(ucDrawPanel.currentFeatureLayer); } else { MessWin messWin = new MessWin(); messWin.SetTitleAndMess("提示", @"获取选择要素出错！", false); return; } }
PS：esc键退出，在OnKeyDown事件中实现
public override void OnKeyDown(int keyCode, int Shift) { if (keyCode == (int)Keys.Escape) { IActiveView pActiveView = _mapCtrl.ActiveView; pActiveView.FocusMap.ClearSelection(); pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, null, pActiveView.Extent); _mapCtrl.CurrentTool = null; } }
没有整理与归纳的知识，一文不值！高度概括与梳理的知识，才是自己真正的知识与技能。 永远不要让自己的自由、好奇、充满创造力的想法被现实的框架所束缚，让创造力自由成长吧！ 多花时间，关心他（她）人，正如别人所关心你的。理想的腾飞与实现，没有别人的支持与帮助，是万万不能的。
本文转自wenglabs博客园博客，原文链接：http://www.cnblogs.com/arxive/p/6262991.html
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