AE功能扩展一 AE功能扩展一

1、添加栅格影像
基本思路：声明栅格工作空间→创建栅格数据集对象→创建金字塔→声明图层对象→刷新地图控件

private void AddBaseMap(string filepath){IWorkspaceFactory pWorkspaceFactory = new RasterWorkspaceFactory(); IWorkspace pWorkspace = pWorkspaceFactory.OpenFromFile(System.IO.Path.GetDirectoryName(filepath), 0); IRasterWorkspace pRasterWorkspace = pWorkspace as IRasterWorkspace; IRasterDataset pRasterDataset = pRasterWorkspace.OpenRasterDataset(System.IO.Path.GetFileName(filepath)); // 创建金字塔IRasterPyramid pRasterPyramid = pRasterDataset as IRasterPyramid; if (!pRasterPyramid.Present){pRasterPyramid.Create(); } // 栅格图层IRasterLayer pRasterLayer = new RasterLayer(); pRasterLayer.CreateFromDataset(pRasterDataset); ILayer pLayer = pRasterLayer as ILayer; // 刷新地图axMapControl1.AddLayer(pLayer,axMapControl1.LayerCount); axMapControl1.Refresh(); }

2、图层顺序调整（记得绑定TOC的OnMouseUp事件）
基本思路：判断左键→声明参数→遍历得到该图层→改变图层顺序→刷新地图

private void axTOCControl1_OnMouseUp(object sender, ITOCControlEvents_OnMouseUpEvent e){try{if (e.button == 1 && pMoveLayer != null && pMoveLayerPoint.Y != e.y){esriTOCControlItem pItem = esriTOCControlItem.esriTOCControlItemNone; IBasicMap pBasicMap = null; object unk = null; object data = https://www.it610.com/article/null; ILayer pLayer = null; axTOCControl1.HitTest(e.x, e.y, ref pItem, ref pBasicMap, ref pLayer, ref unk, ref data); IMap pMap = axMapControl1.ActiveView.FocusMap; if (pItem == esriTOCControlItem.esriTOCControlItemLayer || pLayer != null){if (pMoveLayer != pLayer){ILayer pTempLayer; for (int i = 0; i < pMap.LayerCount; i++){pTempLayer = pMap.get_Layer(i); if (pTempLayer == pLayer){toIndex = i; }}}}else if (pItem == esriTOCControlItem.esriTOCControlItemMap){toIndex = 0; }else if (pItem == esriTOCControlItem.esriTOCControlItemNone){toIndex = pMap.LayerCount - 1; }pMap.MoveLayer(pMoveLayer, toIndex); axMapControl1.ActiveView.Refresh(); axTOCControl1.Update(); }}catch (Exception ex){MessageBox.Show(ex.Message); }}

3、图层上右键
基本思路：判断右键→判断图层→显示控件
这里需要用到一个控件contextMenuStrip。其实右键还有另外的方法，具体可百度，不赘述，有任何问题欢迎随时交流。

private void axTOCControl1_OnMouseDown(object sender, ITOCControlEvents_OnMouseDownEvent e){ESRI.ArcGIS.Controls.esriTOCControlItem Item = ESRI.ArcGIS.Controls.esriTOCControlItem.esriTOCControlItemNone; IBasicMap pBasicMap = null; ILayer pLayer = null; object other = null; object index = null; axTOCControl1.HitTest(e.x, e.y, ref Item, ref pBasicMap, ref pLayer, ref other, ref index); //实现赋值//图层右键if (e.button == 2){pTocFeatureLayer = pLayer as IFeatureLayer; m_Layer = pLayer; if (Item == esriTOCControlItem.esriTOCControlItemLayer)//点击的是图层的话，就显示右键菜单{contextMenuStrip1.Show(axTOCControl1, new System.Drawing.Point(e.x, e.y)); //显示右键菜单，并定义其相对控件的位置，正好在鼠标出显示}} }