c# AE GIS二次开发学习专题（二） 基本地图控件使用
2024-04-12 10:19:11
GIS二次开发学习专题（二） 基本地图控件使用
学习资料来自《牟乃夏 AE开发教程—基于C#.NET》
发的代码是我整理+老师布置的作业
这一部分是地图基本控件的使用与编写，包括：
一、二维控件的使用
二、自行编写代码：添加数据、控制地图：打开文件、添加数据、漫游、全图、放大、缩小、刷新、保存、另存为
三、TOCControl的右键菜单
四、鹰眼视图
一、二维控件的使用
拖入“ToolBarControl”，“TOCControl”，“MapControl”，“LicenseControl”控件，在“ToolBarControl”中添加按钮、设置“LicenseControl”
二、自行编写代码：添加数据、控制地图
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using ESRI.ArcGIS.SystemUI;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.DataSourcesFile;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.DataSourcesRaster;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Display;string m_BasicOperationTool = ""; //定义一个操作按钮变量public Form1(){ESRI.ArcGIS.RuntimeManager.Bind(ESRI.ArcGIS.ProductCode.Engine);InitializeComponent();}1.ToolBarControl：
打开文件:
采用OpenFileDialog进行操作：
/*打开文件按钮*/private void tlbOpen_Click(object sender, EventArgs e){System.Windows.Forms.OpenFileDialog openFileDialog;openFileDialog = new OpenFileDialog();openFileDialog.Title = "open map document";openFileDialog.Filter = "map document(*.mxd)|*.mxd"; //文件过滤器openFileDialog.ShowDialog();string strFilePath = openFileDialog.FileName; //选择文件路径if (axMapControl1.CheckMxFile(strFilePath)){//加载mxd文档之前的鼠标指针，esriPointerArrowHourglass为等待光标axMapControl1.MousePointer = ESRI.ArcGIS.Controls.esriControlsMousePointer.esriPointerArrowHourglass;//LoadMxFile方法有三个参数，文件路径、地图名称或索引和密码，也可以直接重载为只有一个文件路径参数axMapControl1.LoadMxFile(strFilePath, 0, Type.Missing);//axMapControl1.LoadMxFile(strFilePath);//加载mxd文档后的鼠标指针，esriPointerDefault为默认箭头axMapControl1.MousePointer = ESRI.ArcGIS.Controls.esriControlsMousePointer.esriPointerDefault;}else{//不能加载mxd或加载失败时出现消息对话框MessageBox.Show(strFilePath + " is not a valid map document");}}全图、放大、缩小、漫游、刷新：
都是采用点击之后用一个记录操作的字符串去记录，然后用一个方法根据操作去执行。此处是给每一个操作赋予名字，且改变光标样式。
/*全图浏览按钮*/private void tlbGlobal_Click(object sender, EventArgs e){m_BasicOperationTool = "isZoomFull";axMapControl1.Extent = axMapControl1.FullExtent; //变为全图显示，按钮直接生效axMapControl1.MousePointer = esriControlsMousePointer.esriPointerZoom;//设置鼠标指针样式}/*放大按钮*/private void tlbZoomIn_Click(object sender, EventArgs e){m_BasicOperationTool = "ZoomIn";axMapControl1.MousePointer = esriControlsMousePointer.esriPointerZoomIn;}/*缩小按钮*/private void tlbZoomOut_Click(object sender, EventArgs e){m_BasicOperationTool = "ZoomOut";axMapControl1.MousePointer = esriControlsMousePointer.esriPointerZoomOut;}/*刷新*/private void tlbRefresh_Click(object sender, EventArgs e){m_BasicOperationTool = "Refresh";axMapControl1.Refresh(); //点击直接生效axMapControl1.MousePointer = esriControlsMousePointer.esriPointerZoom; //```}/*漫游*/private void tlbPan_Click(object sender, EventArgs e){m_BasicOperationTool = "ZoomPan";axMapControl1.MousePointer = esriControlsMousePointer.esriPointerPan;}点击地图的操作，需要设置axMapControl1的onMouseDown属性
/*点击地图界面的操作*/
private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e){//在axMapControl1上进行点击后才生效的功能，如放大缩小和漫游IEnvelope objEnvelope = null; //地物包路线，地物最小外接矩形IPoint pPoint = null;IActiveView pActiveView = axMapControl1.ActiveView.FocusMap as IActiveView;pPoint = pActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(e.x, e.y); //获取mousedown点switch (m_BasicOperationTool){case "ZoomIn":objEnvelope = axMapControl1.TrackRectangle(); //TrackRectangle为拉框矩形橡皮筋axMapControl1.Extent = objEnvelope;break;case "ZoomOut":objEnvelope = axMapControl1.TrackRectangle();double mapWidth = objEnvelope.Width;double mapHeight = objEnvelope.Height;double x1 = pPoint.X;double x2 = pPoint.X + mapWidth;double y1 = pPoint.Y;double y2 = pPoint.Y - mapHeight * 2;objEnvelope.XMax = x2 + mapWidth * 2;objEnvelope.XMin = x1 - mapWidth * 2;objEnvelope.YMax = y2 - mapHeight * 2;objEnvelope.YMin = y1 + mapHeight * 2;axMapControl1.Extent = objEnvelope;break;case "ZoomPan":axMapControl1.Pan();break;}}添加数据：
添加矢量数据与栅格数据：
private void tlbAddDate_Click(object sender, EventArgs e){OpenFileDialog pOpenFileDialog = new OpenFileDialog();pOpenFileDialog.CheckFileExists = true;pOpenFileDialog.Title = "选择需要加载的地理数据文件";pOpenFileDialog.Filter = "Shape格式文件(*.shp)|*.shp|栅格文件(*.bmp;*.tif;*.jpg;*.img)|*.bmp;*.tif;*.jpg;*.img|(*.bmp)|*.bmp|(*.tif)|*.tif|(*.jpg)|*.jpg|(*.img)|*.img";pOpenFileDialog.ShowDialog();string pRasterFileName = pOpenFileDialog.FileName;if (pRasterFileName == "")return;string strFNaExten = System.IO.Path.GetExtension(pRasterFileName); //获得文件扩展名string pPath = System.IO.Path.GetDirectoryName(pRasterFileName); //返回指定路径字符串的目录信息string pFileName = System.IO.Path.GetFileName(pRasterFileName); //返回指定路径字符串的文件名和扩展名if (strFNaExten == ".shp"){string oFileName = System.IO.Path.GetFileNameWithoutExtension(pRasterFileName); //返回不具有扩展名的指定路径字符串的文件名axMapControl1.AddShapeFile(pPath, oFileName); //加载地图}else{IWorkspaceFactory pWorkspaceFactory = new RasterWorkspaceFactory();//创建工作空间工厂对象IWorkspace pWorkspace = pWorkspaceFactory.OpenFromFile(pPath, 0); //打开IRasterWorkspace pRasterWorkspace = pWorkspace as IRasterWorkspace; //接口的实现IRasterDataset pRasterDataset = pRasterWorkspace.OpenRasterDataset(pFileName);//影响金字塔判断与创建IRasterPyramid3 pRasPyrmid;pRasPyrmid = pRasterDataset as IRasterPyramid3;if (pRasPyrmid != null){if (!(pRasPyrmid.Present)){pRasPyrmid.Create();//创建金字塔}}IRaster pRaster;pRaster = pRasterDataset.CreateDefaultRaster();IRasterLayer pRasterLayer;pRasterLayer = new RasterLayerClass();pRasterLayer.CreateFromRaster(pRaster);ILayer pLayer = pRasterLayer as ILayer;axMapControl1.AddLayer(pLayer, 0);}}保存：
private void tlbSaveMap_Click(object sender, EventArgs e){try{string filePath = axMapControl1.DocumentFilename;IMapDocument pMapDocument = new MapDocumentClass();if (filePath != null && axMapControl1.CheckMxFile(filePath)){if (pMapDocument.get_IsReadOnly(filePath)){MessageBox.Show("本地图文档为只读，不能保存！");pMapDocument.Close();return;}}else{SaveFileDialog pSaveFileD = new SaveFileDialog();pSaveFileD.Title = "请选择保存路径";pSaveFileD.OverwritePrompt = true; //pSaveFileD.Filter = "ArcMap文档(*.mxd)|X.mxd|ArcMap模板(*.mxt)|*.mxt";pSaveFileD.RestoreDirectory = true; //if (pSaveFileD.ShowDialog() == DialogResult.OK) //{filePath = pSaveFileD.FileName;}else{return;}}pMapDocument.New(filePath);pMapDocument.ReplaceContents(axMapControl1.Map as IMxdContents); //pMapDocument.Save(pMapDocument.UsesRelativePaths, true);pMapDocument.Close();MessageBox.Show("保存地图文档成功！");}catch (Exception ex){MessageBox.Show(ex.Message);}}
另存为：
private void tlbSaveAs_Click(object sender, EventArgs e){try{SaveFileDialog pSaveFileD = new SaveFileDialog();pSaveFileD.Title = "另存为";pSaveFileD.OverwritePrompt = true; //pSaveFileD.Filter = "ArcMap文档(*.mxd)|X.mxd|ArcMap模板(*.mxt)|*.mxt";pSaveFileD.RestoreDirectory = true; //if (pSaveFileD.ShowDialog() == DialogResult.OK) //{string filePath = pSaveFileD.FileName;IMapDocument pMapDocument = new MapDocumentClass(); //pMapDocument.New(filePath);pMapDocument.ReplaceContents(axMapControl1.Map as IMxdContents);pMapDocument.Save(true, true); //pMapDocument.Close();}}catch (Exception ex){MessageBox.Show(ex.Message);}}
三、TocControl右键菜单
支持的功能：
需要新建一个form，拖入GirdView窗格，用于显示属性表
设置axTOCControl1的OnMouseDown属性：
IFeatureLayer pTocFeatureLayer = null;private FormAtrribute frmAttribute = null;private ILayer pMoveLayer = null;private int toIndex;
private void axTOCControl1_OnMouseDown(object sender, ESRI.ArcGIS.Controls.ITOCControlEvents_OnMouseDownEvent e){if (e.button == 2) //单击右键，左键为1{esriTOCControlItem item = esriTOCControlItem.esriTOCControlItemNone;IBasicMap map = null; //对属性值初始化，也可以=null; ILayer pLayer = null;object other = null;object index = null;axTOCControl1.HitTest(e.x, e.y, ref item, ref map, ref pLayer, ref other, ref index); //实现赋值,ref的参数必须初始化pTocFeatureLayer = pLayer as IFeatureLayer;if (item == esriTOCControlItem.esriTOCControlItemLayer && pTocFeatureLayer != null) //点击的是图层的话，就显示右键菜单{tsm_Selectable.Enabled = !pTocFeatureLayer.Selectable;tsm_unSelectable.Enabled = pTocFeatureLayer.Selectable;ContextMenuStrip1.Show(Control.MousePosition);}}}/*属性表*/private void tsm_property_Click(object sender, EventArgs e){if (frmAttribute == null || frmAttribute.IsDisposed){frmAttribute = new FormAtrribute();}frmAttribute.CurFeatureLayer = pTocFeatureLayer;frmAttribute.InitUI();frmAttribute.ShowDialog();}/*移除图层*/private void tsm_Remove_Click(object sender, EventArgs e){if (pTocFeatureLayer == null) return;DialogResult result = MessageBox.Show("是否删除[" + pTocFeatureLayer.Name + "]图层", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);if (result == DialogResult.OK){axMapControl1.Map.DeleteLayer(pTocFeatureLayer);}axMapControl1.ActiveView.Refresh();}/*缩放到图层*/private void tsm_ScaleToLayer_Click(object sender, EventArgs e){if (pTocFeatureLayer == null) return;(axMapControl1.Map as IActiveView).Extent = pTocFeatureLayer.AreaOfInterest;(axMapControl1.Map as IActiveView).PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);}/*图层可选*/private void tsm_Selectable_Click(object sender, EventArgs e){pTocFeatureLayer.Selectable = true;tsm_Selectable.Enabled = !tsm_Selectable.Enabled;}/*图层不可选*/private void tsm_unSelectable_Click(object sender, EventArgs e){pTocFeatureLayer.Selectable = false;tsm_Selectable.Enabled = !tsm_Selectable.Enabled;}四、鹰眼视图
/// <summary>
/// 鹰眼
/// </summary> private bool bCanDrag; //鹰眼地图上矩形框可移动的标志private IPoint pMoveRectPoint; //记录在移动鹰眼地图上的矩形框时鼠标的位置private IEnvelope pEnv; //记录数据视图的Event
/*确保鹰眼视图与数据视图的一致*/private void axMapControl1_OnMapReplaced(object sender, IMapControlEvents2_OnMapReplacedEvent e){if (EagleEyeMapControl2.LayerCount > 0){EagleEyeMapControl2.ClearLayers();}//设置鹰眼和主地图的坐标系一致EagleEyeMapControl2.SpatialReference = axMapControl1.SpatialReference;for (int i = axMapControl1.LayerCount - 1; i >= 0;i-- ){//使鹰眼地图与数据视图的图层上下顺序保持一致ILayer pLayer = axMapControl1.get_Layer(i);if (pLayer is IGroupLayer || pLayer is ICompositeLayer){ICompositeLayer pCompositeLayer = (ICompositeLayer)pLayer;for (int j = pCompositeLayer.Count - 1; j >= 0; j--){ILayer pSubLayer = pCompositeLayer.get_Layer(j);IFeatureLayer pFeatureLayer = pSubLayer as IFeatureLayer;if (pFeatureLayer != null){if (pFeatureLayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryPoint && pFeatureLayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryMultipoint){EagleEyeMapControl2.AddLayer(pLayer);}}}}else{IFeatureLayer pFeatureLayer = pLayer as IFeatureLayer;if (pFeatureLayer != null){if (pFeatureLayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryPoint && pFeatureLayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryMultipoint){EagleEyeMapControl2.AddLayer(pLayer);}}//设置鹰眼地图全图显示EagleEyeMapControl2.Extent = axMapControl1.FullExtent;pEnv = axMapControl1.Extent as IEnvelope;DrawRectangle(pEnv);EagleEyeMapControl2.ActiveView.Refresh();}}copyToPageLayout(); //数据视图与布局视图的数据拷贝}/*鹰眼与数据视图同步*/private void SynchronizeEagleEye(){if (EagleEyeMapControl2.LayerCount > 0){EagleEyeMapControl2.ClearLayers();}//设置鹰眼和主地图的坐标系一致EagleEyeMapControl2.SpatialReference = axMapControl1.SpatialReference;for (int i = axMapControl1.LayerCount - 1; i >= 0; i--){//使鹰眼地图与数据视图的图层上下顺序保持一致ILayer pLayer = axMapControl1.get_Layer(i);if (pLayer is IGroupLayer || pLayer is ICompositeLayer){ICompositeLayer pCompositeLayer = (ICompositeLayer)pLayer;for (int j = pCompositeLayer.Count - 1; j >= 0; j--){ILayer pSubLayer = pCompositeLayer.get_Layer(j);IFeatureLayer pFeatureLayer = pSubLayer as IFeatureLayer;if (pFeatureLayer != null){if (pFeatureLayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryPoint && pFeatureLayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryMultipoint){EagleEyeMapControl2.AddLayer(pLayer);}}}}else{IFeatureLayer pFeatureLayer = pLayer as IFeatureLayer;if (pFeatureLayer != null){if (pFeatureLayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryPoint && pFeatureLayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryMultipoint){EagleEyeMapControl2.AddLayer(pLayer);}}//设置鹰眼地图全图显示EagleEyeMapControl2.Extent = axMapControl1.FullExtent;pEnv = axMapControl1.Extent as IEnvelope;DrawRectangle(pEnv);EagleEyeMapControl2.ActiveView.Refresh();}}}/*画矩形框*/private void DrawRectangle(IEnvelope pEnvelope){//绘制前，清除之前的矩形框IGraphicsContainer pGraphicsContainer = EagleEyeMapControl2.Map as IGraphicsContainer;IActiveView pActiveView = pGraphicsContainer as IActiveView;pGraphicsContainer.DeleteAllElements();//当前视图范围IRectangleElement pRectangleElement = new RectangleElementClass();IElement pElement = pRectangleElement as IElement;pElement.Geometry = pEnvelope;//设置矩形框IRgbColor pColor = new RgbColor();pColor = GetRgbColor(255,0,0); //红pColor.Transparency = 255;ILineSymbol pOutLine = new SimpleLineSymbol();pOutLine.Width = 2;pOutLine.Color = pColor;IFillSymbol pFillSymbol = new SimpleFillSymbol();pColor = new RgbColor(); //pColor.Transparency = 0;pFillSymbol.Color = pColor;pFillSymbol.Outline = pOutLine;//添加矩形框IFillShapeElement pFillShapeElement = pElement as IFillShapeElement;pFillShapeElement.Symbol = pFillSymbol;pGraphicsContainer.AddElement((IElement)pFillShapeElement, 0);//刷新pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics,null,null);}/*添加矩形框与数据视图范围的联动*/private void EagleEyeMapControl2_OnExtentUpdated(object sender, IMapControlEvents2_OnExtentUpdatedEvent e){IEnvelope pEnvelope = (IEnvelope)e.newEnvelope;DrawRectangle(pEnvelope);}
/*点击鹰眼视图绘制矩形框*/private void EagleEyeMapControl2_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e){if (EagleEyeMapControl2.Map.LayerCount > 0){if (e.button == 1) //左键{if (e.mapX > pEnv.XMin && e.mapY > pEnv.YMin){bCanDrag = true;}pMoveRectPoint = new ESRI.ArcGIS.Geometry.Point(); //pMoveRectPoint.PutCoords(e.mapX,e.mapY);}else if (e.button == 2) //鼠标右键{IEnvelope pEnvelope = EagleEyeMapControl2.TrackRectangle();IPoint pTempPoint = new ESRI.ArcGIS.Geometry.Point(); //pTempPoint.PutCoords(pEnvelope.XMin + pEnvelope.Width / 2, pEnvelope.YMin + pEnvelope.Height / 2);axMapControl1.Extent=pEnvelope;//矩形框的高宽进行中心调整axMapControl1.CenterAt(pTempPoint);}}}
/*拖动矩形框*/private void EagleEyeMapControl2_OnMouseMove(object sender, IMapControlEvents2_OnMouseMoveEvent e){if (e.mapX > pEnv.XMin && e.mapY > pEnv.YMin && e.mapX < pEnv.XMax && e.mapY < pEnv.YMax){//EagleEyeMapControl2.MousePointer = esriControlsMousePointer.esriPointerHand;if (e.button == 2){EagleEyeMapControl2.MousePointer = esriControlsMousePointer.esriPointerDefault;}}else{EagleEyeMapControl2.MousePointer = esriControlsMousePointer.esriPointerDefault;}if (bCanDrag){double Dx, Dy;Dx = e.mapX - pMoveRectPoint.X;Dy = e.mapY - pMoveRectPoint.Y;pEnv.Offset(Dx,Dy);pMoveRectPoint.PutCoords(e.mapX, e.mapY);DrawRectangle(pEnv);axMapControl1.Extent = pEnv;}}/*判断鼠标是否是点击*/private void EagleEyeMapControl2_OnMouseUp(object sender, IMapControlEvents2_OnMouseUpEvent e){if (e.button == 1 && pMoveRectPoint != null){if (e.mapX == pMoveRectPoint.X && e.mapY == pMoveRectPoint.Y){axMapControl1.CenterAt(pMoveRectPoint);}bCanDrag = false;}}/*此处缺失该函数 请从博主其他文章内查找···信息还来不及完全更新，抱歉*/private IRgbColor GetRgbColor(int p, int p_2, int p_3){throw new NotImplementedException();}
其他：该代码我还写了数据视图与布局视图的切换，用不到可以删除该部分代码。
注意
鹰眼视图功能尚未完善，按照正常规划，应该小窗显示放大后数据视图中的全图，并且有矩形框显示，此部分内容改进，见后续文档
源码下载：
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