AE10.2与C#2012开发

此实例是以ArcEngine为平台，在Visual C#的集成开发环境下进行开发的一个简单实例。目的是让大家初步了解二次开发的大致过程。此实例要求达到的功能是：搭建系统的基本框架，实现地图控件（MapControl)、工具栏控件(ToolbarControl)、图层管理控件(TocControl)之间的交互操作，同时实现地图加载、全屏显示、放大、缩小、漫游等基本的GIS功能。
2.1 代码展示
2.1.1 主应用程序

namespace ZY{    static class Program    {        private static LicenseInitializer m_AOLicenseInitializer = new ZY.LicenseInitializer();        /// <summary>        /// 应用程序的主入口点。        /// </summary>        [STAThread]        static void Main()        {            //ESRI License Initializer generated code.            m_AOLicenseInitializer.InitializeApplication(new esriLicenseProductCode[] { esriLicenseProductCode.esriLicenseProductCodeEngine },            new esriLicenseExtensionCode[] { });            Application.EnableVisualStyles();            Application.SetCompatibleTextRenderingDefault(false);            Application.Run(new Form1());            //ESRI License Initializer generated code.            //Do not make any call to ArcObjects after ShutDownApplication()            m_AOLicenseInitializer.ShutdownApplication();        }    }}2.1.2  引用arcengine组件库

2.1.3 实现打开shp文件的功能，添加openFileDialog1控件

private void menuAddShp_Click(object sender, EventArgs e)        {                               IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactory();                //添加文件过滤器选择后缀.shp                openFileDialog1.Filter = "ShapeFile文件(*.shp)|*.shp";                //设置文件对话框的初始路径                openFileDialog1.InitialDirectory = @"C:\Program Files (x86)\ArcGIS\DeveloperKit10.2\Samples\data\World";                //示例数据文件夹                openFileDialog1.Multiselect = false;                DialogResult pDialogResult = openFileDialog1.ShowDialog();                if (pDialogResult != DialogResult.OK)                    return;                //获取文件名与路径                string pPath = openFileDialog1.FileName;                string pFolder = System.IO.Path.GetDirectoryName(pPath);                string pFileName = System.IO.Path.GetFileName(pPath);                IWorkspace PWorkspace = pWorkspaceFactory.OpenFromFile(pFolder, 0);                IFeatureWorkspace pFeatureWorkspace = pWorkspaceFactory as IFeatureWorkspace;                IFeatureClass pFC = pFeatureWorkspace.OpenFeatureClass(pFileName);                IFeatureLayer pFLayer = new FeatureLayerClass();                pFLayer.FeatureClass = pFC;                pFLayer.Name = pFC.AliasName;                ILayer pLayer = pFLayer as ILayer;                IMap pMap = axMapControl1.Map;                pMap.AddLayer(pLayer);                axMapControl1.ActiveView.Refresh();                /*IWorkspace pWorkspace1 = pWorkspaceFactory.OpenFromFile(@"C:\Program Files (x86)\ArcGIS\DeveloperKit10.2\Samples\data\World", 0);                IFeatureWorkspace pFeatureWorkspace = pWorkspace1 as IFeatureWorkspace;                IFeatureClass pFC = pFeatureWorkspace.OpenFeatureClass("world30.shp");                IFeatureLayer pFLayer = new FeatureLayerClass();                pFLayer.FeatureClass = pFC;                pFLayer.Name = pFC.AliasName;                ILayer pLayer=pFLayer as */              }2.1.4  实现打开地图文档mxd```private void```adMapDocument()        {            //利用System中OpenFileDialog方法，显示一个对话框，提示用户打开文件            System.Windows.Forms.OpenFileDialog openFileDialog;            openFileDialog = new OpenFileDialog();            openFileDialog.InitialDirectory = m_Path;            //对话框结果不为OK不往下进行            DialogResult DR=openFileDialog.ShowDialog();            //设置对话框的名称            openFileDialog.Title = "打开地图文档";            //获取或设置当前文件名筛选器字符串，来决定打开文件的类型为*.Mxd            openFileDialog.Filter = "map documents(*.mxd)|*.mxd";            //判断，如果对话框结果不为OK的话不继续往下进行            if (DR != DialogResult.OK)                return;            //获取文件的路径filePath以及文件名称            string filePath = openFileDialog.FileName;            if (axMapControl1.CheckMxFile(filePath))            {                //定义axMapControl控制鼠标指针选项为沙漏光标                axMapControl1.MousePointer = esriControlsMousePointer.esriPointerHourglass;                //传入LoadMxFlie方法的三个参数，filePath—文件路径；0—地图名称或索引；Type.Missing—通过反射进行调用获取参数的默认值                axMapControl1.LoadMxFile(filePath, 0, Type.Missing);                //定义axMapControl控制鼠标指针为默认箭头                axMapControl1.MousePointer = esriControlsMousePointer.esriPointerDefault;                axMapControl1.Extent = axMapControl1.FullExtent;            }            else            {                MessageBox.Show(filePath + "不是有效的地图文档");            }        }2.1.5  添加mdb数据 public void OpenWorkspaceFromFileAccess(string clsName, string DBPath)        {               //新建一个Access的工作空间工厂            IWorkspaceFactory workspaceFactory = new AccessWorkspaceFactoryClass();            //根据Access路径打开一个Access工作空间工厂，获得工作空间对象            IWorkspace workspace = workspaceFactory.OpenFromFile(DBPath, 0);            IFeatureWorkspace accessWorkspace = workspace as IFeatureWorkspace;            //打开图层名为clsName的数据集，获取其要素类对象FeatureClass            IFeatureClass tFeatureClass = accessWorkspace.OpenFeatureClass(clsName);            //实例化一个图层（IFeatureLayer）对象素类            //该对象类用于装载被打开的tFeatureClass，最后axMapControl控件上显示            IFeatureLayer pFtLayer =new FeatureLayerClass() ;            pFtLayer.FeatureClass= tFeatureClass  ;            pFtLayer.Name = clsName;            axMapControl1.AddLayer(pFtLayer);                      }2.2  打开效果2.2.1  系统界面系统添加了打开，另存为，缩放，漫游，全图等控件。2.2.2  读取自带world.lyr数据2.2.3  系统2.0版本，加载mxd文档，shp文件，mdb空间数据文件2.3  实现二次开发的图像绘制功能2.3.1  打开美国地图mxd文件，漫游至加州2.3.2  线段绘制实现代码  private void 线ToolStripMenuItem_Click(object sender, EventArgs e)        {            //设置枚举变量的绘制几何图形类型            oprFlag = Operation.ConstructionPolyLine;//对应上述所定义的枚举Operation            geoCollection = new PolylineClass();            ptCollection = new PolylineClass();        }private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)        {            //类型声明                   missing = Type.Missing;             //若为添加折线事件            if (oprFlag == Operation.ConstructionPolyLine)            {                //axMapControl1控件的当前控件为指针（null）                axMapControl1.CurrentTool = null;                //通过AddPoint方法从GetPoint函数中获取鼠标单击的坐标                ptCollection.AddPoint(GetPoint(e.mapX, e.mapY), ref missing, ref missing);                //定义几何类型绘制折线的方法                Geometry = axMapControl1.TrackLine();                //通过addFeature函数的两个参数，Highways—绘制折线的图层；Geometry—绘制的几何折线                AddFeature("Highways", Geometry);                //折线添加完成之后结束编辑状态                oprFlag = Operation.Nothing;解读一些简单的Python代码3.1  Demo1\04批量删除gdb中的数据   import arcpy;from arcpy import envenv.workspace=r'C:\Users\yanrui\Documents\ArcGIS\Default.gdb'fcs = arcpy.ListFeatureClasses()for fc in fcs:    arcpy.Delete_management(fc)ArcPy 是一个以成功的 arcgisscripting 模块为基础并继承了 arcgisscripting 功能进而构建而成的站点包。目的是为以实用高效的方式通过 Python 执行地理数据分析、数据转换、数据管理和地图自动化创建基础。3.2  使用 Python 内置的 len 函数来获取该数值import arcpyarcpy.env.workspace = "c:/ Shapefiles"fcs = arcpy.ListFeatureClasses()fcCount = len(fcs)print fcCount3.3  列出工作空间中所有以字母 G 开头的要素类import arcpyarcpy.env.workspace = "D:/ data.gdb"fcs = arcpy.ListFeatureClasses("G*")3.4  为文件夹内形式为标记图像文件格式 (TIFF) 图像的所有栅格创建栅格金字塔arcpy.env.workspace= "D:/ images"#for tiff in arcpy.ListRasters("*", "TIF"):     # Create pyramids    #    arcpy.BuildPyramids_management(tiff)3.5  Python插入多边形数据import arcpyf=open(r'C:\data.txt')cursor=arcpy.InsertCursor(r'C:\Data\polygon.shp')array=arcpy.Array()point=arcpy.Point()for line in f:    pt=line.split()    str = pt[3].split(';')    name = pt[1]    for j in str:        xy = j.split(',')        point.X = float(xy[0]);        point.Y = float(xy[1])        array.add(point)    row = cursor.newRow()    row.shape = array    row.name = name    array.removeAll()     cursor.insertRow(row)