打开地图

打开地图 #region 打开Mxd文件 if (this.axMapControl1.LayerCount > 0) { DialogResult result = MessageBox.Show("是否保存当前地图,", "警告",MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question); if (result == DialogResult.Cancel) { return; } if (result == DialogResult.Yes) { // btnSaveMxd_Click(null,null ); //调用保存文档方法 } } OpenFileDialog openFileDialog = new OpenFileDialog(); string filename = string.Empty; openFileDialog.Title = "Open Map Document"; openFileDialog.Filter = "Map Documents (*.mxd;*.pmf)|*.mxd;*.pmf"; openFileDialog.InitialDirectory = @"C:\Users\TJ\Desktop"; //默认路径 openFileDialog.ShowHelp = true; //现实帮助按钮 有对应的事件“HelpRequest” if (openFileDialog.ShowDialog() == DialogResult.OK) { filename = openFileDialog.FileName; if (axMapControl1.CheckMxFile(filename)) { axMapControl1.LoadMxFile(filename); // 设置MapControl显示范围至数据的全局范围 axMapControl1.Extent = axMapControl1.FullExtent; } } #endregion 自定义工具类，实现添加图名，比例尺，指北针 -------------------------添加图名------------------------------ using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using ESRI.ArcGIS.Display; using ESRI.ArcGIS.SystemUI; using ESRI.ArcGIS.Carto; using ESRI.ArcGIS.esriSystem; using ESRI.ArcGIS.Output; using ESRI.ArcGIS.Controls; using ESRI.ArcGIS.Geometry; using ESRI.ArcGIS.ADF.BaseClasses; using stdole; //自定义工具类，实现添加图名功能 namespace WindowsApplication1 { class addPageLayoutName:BaseTool { public Form1 formTemp; TextBox textbox; AxPageLayoutControl axLayoutControl; IPoint pPoint; //double xMap, yMap; public static double xMap; public static double yMap; public override void OnMouseDown(int Button, int Shift, int X, int Y) { if (Button==1) { pPoint = formTemp.returnPageLayoutControl().ActiveView.ScreenDisplay.DisplayTransformation.T oMapPoint(X, Y); xMap = pPoint.X; yMap = pPoint.Y; formTemp.returnTextbox1().Location = new System.Drawing.Point(X,Y); formTemp.returnTextbox1().Visible = true; formTemp.returnTextbox1().Focus(); formTemp.returnTextbox1().Text = "请在此输入图名"; } } public override void OnCreate(object hook) { axLayoutControl = hook as AxPageLayoutControl; } public void AddTextElement(AxPageLayoutControl PageLayoutControl,double x,double y,string textName) { IPageLayout pPageLayout; IActiveView pAV; IGraphicsContainer pGraphicsContainer; IPoint pPoint; ITextElement pTextElement; IElement pElement; ITextSymbol pTextSymbol; IRgbColor pColor; pPageLayout = PageLayoutControl.PageLayout; pAV = (IActiveView)pPageLayout; pGraphicsContainer = (IGraphicsContainer)pPageLayout; pTextElement = new TextElementClass(); IFontDisp pFont = new StdFontClass() as IFontDisp; pFont.Bold = true; pFont.Name = "宋体"; pFont.Size = 13; pColor = new RgbColorClass(); pColor.Red = 255; pTextSymbol = new TextSymbolClass(); pTextSymbol.Color = (IColor)pColor; pTextSymbol.Font = pFont; pTextElement.Text = textName; pTextElement.Symbol = pTextSymbol; pPoint = new PointClass(); pPoint.X = x; pPoint.Y = y; pElement = (IElement)pTextElement; pElement.Geometry = (IGeometry)pPoint; pGraphicsContainer.AddElement(pElement, 0); pAV.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null); } } } 另外附加其它(添加比例尺，指北针的代码，，，也是通过自定义工具类实现的，，，，下列只给出自定义工具类的代码～) ---------------------------------------添加指北针------------------------------------------- using System; using System.Collections.Generic; using System.Text; using ESRI.ArcGIS.Carto; using ESRI.ArcGIS.Controls; using ESRI.ArcGIS.Display; using ESRI.ArcGIS.Geometry; using ESRI.ArcGIS.ADF.BaseClasses; namespace WindowsApplication1 { sealed class addNorthArrow : BaseTool { AxPageLayoutControl axPageLayout=null; IPoint pPoint; bool bInuse; INewEnvelopeFeedback pNewEnvelopeFeedback = null; public addNorthArrow() { base.m_caption= "添加指北针"; base.m_toolTip = "添加指北针"; base.m_category = "customCommands"; base.m_message = "添加指北针"; base.m_deactivate = true; } public override void OnCreate(object hook) { axPageLayout = (AxPageLayoutControl)hook; } public override void OnMouseDown(int Button, int Shift, int X, int Y) { pPoint = axPageLayout.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y); bInuse = true; } public override void OnMouseMove(int Button, int Shift, int X, int Y) { if (bInuse==false) { return; } if (pNewEnvelopeFeedback==null) { pNewEnvelopeFeedback = new NewEnvelopeFeedbackClass(); pNewEnvelopeFeedback.Display = axPageLayout.ActiveView.ScreenDisplay; pNewEnvelopeFeedback.Start(pPoint); } pNewEnvelopeFeedback.MoveTo(axPageLayout.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y)); } public override void OnMouseUp(int Button, int Shift, int X, int Y) { if (bInuse==false) { return; } if (pNewEnvelopeFeedback==null) { pNewEnvelopeFeedback = null; bInuse = false; return; } IEnvelope pEnvelope=pNewEnvelopeFeedback.Stop(); if((pEnvelope.IsEmpty)||(pEnvelope.Width==0)||(pEnvelope.Height==0)) { pNewEnvelopeFeedback = null; bInuse = false; return; } addNorthArrowForm northArrow = new addNorthArrowForm(); IStyleGalleryItem pStyleGalleryItemTemp = Form1.pStyleGalleryItem; if (pStyleGalleryItemTemp==null) { return; } IMapFrame pMapframe = axPageLayout.ActiveView.GraphicsContainer.FindFrame(axPageLayout.ActiveView.FocusMap)as IMapFrame; IMapSurroundFrame pMapSurroundFrame = new MapSurroundFrameClass(); pMapSurroundFrame.MapFrame = pMapframe; pMapSurroundFrame.MapSurround = (IMapSurround)pStyleGalleryItemTemp.Item; //在pageLayout中根据名称查要Element，找到之后删除已经存在的指北针 IElement pElement = axPageLayout.FindElementByName("NorthArrows"); if (pElement!=null) { axPageLayout.ActiveView.GraphicsContainer.DeleteElement(pElement); //删 除已经存在的指北针 } pElement = (IElement)pMapSurroundFrame; pElement.Geometry = (IGeometry)pEnvelope; axPageLayout.ActiveView.GraphicsContainer.AddElement(pElement, 0); axPageLayout.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null); pNewEnvelopeFeedback = null; bInuse = false; } } } ----------------------------------------添加比例尺(Scale Bars)----------------------------------- using System; using System.Collections.Generic; using System.Text; using ESRI.ArcGIS.Carto; using ESRI.ArcGIS.Controls; using ESRI.ArcGIS.Display; using ESRI.ArcGIS.Geometry; using ESRI.ArcGIS.ADF.BaseClasses; namespace WindowsApplication1 { sealed class addScaleBar:BaseTool { //---------------------------------------------------------- //发现的重大问题，如果用IHookHelper，就会出现问题，用AxPageLayoutControl 则不会出现问题，以后注意 //private IHookHelper pHookHelper=null; private AxPageLayoutControl axPagelayoutControl = null; private IPoint pPoint; private INewEnvelopeFeedback pNewEnvelopeFeedback; private bool bInuse; public addScaleBar() { base.m_caption = "ScaleBar"; base.m_category = "myCustomCommands(C#)"; base.m_message = "Add a scale bar map surround"; base.m_name = "myCustomCommands(C#)_ScaleBar"; base.m_toolTip = "Add a scale bar"; base.m_deactivate = true; } public override void OnCreate(object hook) { //pHookHelper.Hook = hook; axPagelayoutControl = hook as AxPageLayoutControl; } public override void OnMouseDown(int Button, int Shift, int X, int Y) { pPoint = axPagelayoutControl.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y); bInuse = true; } public override void OnMouseMove(int Button, int Shift, int X, int Y) { if (bInuse==false) { return; } if (pNewEnvelopeFeedback==null) { pNewEnvelopeFeedback = new NewEnvelopeFeedbackClass(); pNewEnvelopeFeedback.Display = axPagelayoutControl.ActiveView.ScreenDisplay; pNewEnvelopeFeedback.Start(pPoint); } pNewEnvelopeFeedback.MoveTo(axPagelayoutControl.ActiveView.ScreenDispla y.DisplayTransformation.ToMapPoint(X, Y)); } public override void OnMouseUp(int Button, int Shift, int X, int Y) { if (bInuse==false) { return; } if (pNewEnvelopeFeedback==null) { pNewEnvelopeFeedback = null; bInuse = false; return; } IEnvelope pEnvelope = pNewEnvelopeFeedback.Stop(); if ((pEnvelope.IsEmpty)||(pEnvelope.Width==0)||(pEnvelope.Height==0)) { pNewEnvelopeFeedback = null; bInuse = false; return; } AddScaleBarForm scaleBarForm = new AddScaleBarForm(); //scaleBarForm.Show(); IStyleGalleryItem pStyleItem = Form1.pStyleGalleryItem; if (pStyleItem == null) { return; } IMapFrame pMapframe = axPagelayoutControl.ActiveView.GraphicsContainer.FindFrame(axPagelayoutControl.ActiveView.FocusMap) as IMapFrame; IMapSurroundFrame pSurroundFrame = new MapSurroundFrameClass(); pSurroundFrame.MapFrame = pMapframe; pSurroundFrame.MapSurround = (IMapSurround)pStyleItem.Item; //在pageLayout中根据名称查要Element，找到之后删除已经存在的比例尺 IElement pelement = axPagelayoutControl.FindElementByName("ScaleBars"); if (pelement != null) { axPagelayoutControl.ActiveView.GraphicsContainer.DeleteElement(pelement); //删除已经存在的指北针 } pelement = (IElement)pSurroundFrame; pelement.Geometry = (IGeometry)pEnvelope; axPagelayoutControl.ActiveView.GraphicsContainer.AddElement(pelement, 0); axPagelayoutControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null); pNewEnvelopeFeedback = null; bInuse = false; } } } 在地图屏幕上绘制点、线、面符号 上一篇 / 下一篇 2010-06-30 16:02:04 / 个人分类:ArcEngine 查看( 883 ) / 评论( 1 ) / 评分( 0 / 0 ) 有一种方法在地图屏幕上绘制点、线、面符号，当地图刷新一次后就消失了。 用下面的方法不会出现这种情况: 1、创建一个GraphicsLayer，做为绘制符号的容器 2、设置符号属性，并绘制。 下面是绘制点，线以及清除的实例代码: ///

/// 读取或创建指定名称的GraphicsLayer ///

/// 当前地图 /// 图层名称唯一 /// IGraphicsLayer对象 public static IGraphicsLayer AddOrGetSubGraphicsLayer(IMap map, string subg raphicsLayername) { ICompositeGraphicsLayer pCompositeGLayer = map.BasicGraphicsLayer as IC ompositeGraphicsLayer; IGraphicsLayer pGLayer = null; try { //查找是否已存在,如果不存在,跳转到catch内容. //如果查到不到,说明集合中并没有指定名称的graphicslayer pGLayer = pCompositeGLayer.FindLayer(subgraphicsLayername); } catch { //若不存在,则添加一个指定名称的GraphicsLayer pGLayer = pCompositeGLayer.AddLayer(subgraphicsLayername, null); } return pGLayer; } ///

/// 在当前的地图绘制点 ///

/// 地图控件 /// 点的几何形状 /// 点符号 /// 点所在的GraphicLayer的名字 /// 是否自动刷新 public static void drawPointToGraphicLayer(AxMapControl mapControl, IPoint pGeom, IMarkerSymbol pSym, string GraphicLayerName, bool autoRefesh) { try { //生成GraphicsLayer-"GX.jpnet_Junctions" IGraphicsLayer pGraphicsLayer = AddOrGetSubGraphicsLayer(mapControl.Map, GraphicLayerName); IGraphicsContainer iGC = pGraphicsLayer as IGraphicsContainer; IElement pEle; IMarkerElement pLE; if (pGeom != null) { pEle = new MarkerElementClass() as IElement; pLE = pEle as IMarkerElement; pLE.Symbol = pSym; pEle.Geometry = pGeom; iGC.AddElement(pEle, 0); } if (autoRefesh) mapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriView Graphics, Type.Missing, mapControl.ActiveView.Extent); } catch (Exception e) { MessageBox.Show(e.Message); } } ///

/// 在当前的地图绘制点多义线 ///

/// 地图控件 /// 多义线几何形状 /// GraphicLayer的名称 /// 是否自动刷新 public static void drawPolylineToGraphicLayer(AxMapControl mapControl, IPol yline pGeom, string GraphicLayerName,bool autoRefesh) { try { //生成GraphicsLayer IGraphicsLayer pGraphicsLayer = AddOrGetSubGraphicsLayer(mapControl. Map, GraphicLayerName); IGraphicsContainer iGC = pGraphicsLayer as IGraphicsContainer; ILineSymbol ipLineSymbol = new CartographicLineSymbolClass(); ipLineSymbol.Width = 2; IRgbColor pRgbColor = new RgbColorClass(); pRgbColor.Red = 255; pRgbColor.Green = 0; pRgbColor.Blue = 0; ipLineSymbol.Color = pRgbColor as IColor; IElement pEle; ILineElement pLE; if (pGeom != null) { pEle = new LineElementClass() as IElement; pLE = pEle as ILineElement; pLE.Symbol = ipLineSymbol; pEle.Geometry = pGeom; iGC.AddElement(pEle, 0); } if(autoRefesh) mapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriView Graphics, Type.Missing, mapControl.ActiveView.Extent); } catch (Exception e) { MessageBox.Show(e.Message); } } ///

/// 清除指定图层上绘制的符号 ///

/// public static void ClearDrawingAtGLayer(AxMapControl pMapControl, IGraphicsLayer pGLayer) { IGraphicsContainer iGC = pGLayer as IGraphicsContainer; iGC.DeleteAllElements(); pMapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, Type.Missing, pMapControl.ActiveView.Extent); pMapControl.ActiveView.Refresh(); } 添加指北针的代码，看到有人问，贴出来大家分享下，呵呵～ 比较简单的添加方式，欢迎指教 private void button2_Click(object sender, EventArgs e) { UID pUID = new UIDClass(); pUID.Value = "esriCarto.MarkerNorthArrow"; IMarkerSymbol pMarkerSymbol = new ArrowMarkerSymbolClass(); pMarkerSymbol.Size = 20; IPoint pPoint = axPageLayoutControl1.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(0, 300); //IPoint pPoint = new PointClass(); //pPoint.PutCoords(10, 10); IEnvelope pEnvelope = new EnvelopeClass(); pEnvelope.PutCoords(pPoint.X, pPoint.Y, pPoint.X + pMarkerSymbol.Size, pPoint.Y + pMarkerSymbol.Size); IMapSurround pMapSurround = CreateSurround(pUID, pEnvelope, null); IMarkerNorthArrow pMarkerNorthArrow = pMapSurround as IMarkerNorthArrow; pMarkerNorthArrow.MarkerSymbol = pMarkerSymbol; INorthArrow pNorthArrow = pMarkerNorthArrow as INorthArrow; axPageLayoutControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null); } public IMapSurround CreateSurround(UID pUID, IEnvelope pEnvelope, IBorder pMapSurroundFrameBorder) { IActiveView pActiveView = axPageLayoutControl1.ActiveView as IActiveView; IGraphicsContainer pGraphicsContainer = axPageLayoutControl1.PageLayout as IGraphicsContainer; IMapFrame pMapFrame = pGraphicsContainer.FindFrame(pActiveView.FocusMap) as IMapFrame; IMapSurroundFrame pMapSurroundFrame = pMapFrame.CreateSurroundFrame(pUID, null); if (pMapSurroundFrameBorder != null) { pMapSurroundFrame.Border = pMapSurroundFrameBorder; } IElement pElement = pMapSurroundFrame as IElement; pElement.Geometry = pEnvelope; //这两句将要素显示在屏幕上 pElement.Activate(pActiveView.ScreenDisplay); pElement.Draw(pActiveView.ScreenDisplay, new CancelTrackerClass()); pGraphicsContainer.AddElement(pElement, 0); IMarkerElement pMkElement = new MarkerElementClass(); pMkElement = pElement as IMarkerElement; axPageLayoutControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null); return pMapSurroundFrame.MapSurround; }