基于AE的基础的GIS系统的开发基于AE的基础的GIS系统的开发

一个GIS系统需要的基本功能的代码

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一些基本的拖拽操作就不讲了，直接上代码吧。

1、打开.mxd文件
基本思路：判断mxd路径存在→打开mxd文件

string filename = Application.StartupPath + "\\GIS系统.mxd"; if (axMapControl1.CheckMxFile(filename)){axTOCControl1.SetBuddyControl(axMapControl1); //设置TOC与MapControl绑定axMapControl1.LoadMxFile(filename); //加载mxd文件}

2、添加Shp（打开文件方式）
基本思路：打开文件→判断shp→添加shp→刷新地图

OpenFileDialog pOpenFileDialog = new OpenFileDialog(); pOpenFileDialog.CheckFileExists = true; pOpenFileDialog.Title = "导入文件"; pOpenFileDialog.Filter = "Shape文件（*.shp）|*.shp|个人地理数据库（*.mdb）|*.mdb"; pOpenFileDialog.ShowDialog(); ////获取文件路径//FileInfo pFileInfo = new FileInfo(pOpenFileDialog.FileName); //string pPath = pOpenFileDialog.FileName.Substring(0, pOpenFileDialog.FileName.Length - pFileInfo.Name.Length); //mainMapControl.AddShapeFile(pPath, pFileInfo.Name); IWorkspaceFactory pWorkspaceFactory; IFeatureWorkspace pFeatureWorkspace; IFeatureLayer pFeatureLayer; string pFullPath = pOpenFileDialog.FileName; if (pFullPath == "") return; int pIndex = pFullPath.LastIndexOf("\\"); string pFilePath = pFullPath.Substring(0, pIndex); //文件路径string pFileName = pFullPath.Substring(pIndex + 1); //文件名string pLastName = pFileName.Substring(pFileName.Length - 3); if (pLastName == "shp"){//实例化ShapefileWorkspaceFactory工作空间，打开Shape文件pWorkspaceFactory = new ShapefileWorkspaceFactory(); pFeatureWorkspace = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(pFilePath, 0); //创建并实例化要素集IFeatureClass pFeatureClass = pFeatureWorkspace.OpenFeatureClass(pFileName); pFeatureLayer = new FeatureLayer(); pFeatureLayer.FeatureClass = pFeatureClass; pFeatureLayer.Name = pFeatureLayer.FeatureClass.AliasName; //ClearAllData(); //新增删除数据 axMapControl1.Map.AddLayer(pFeatureLayer); axMapControl1.ActiveView.Refresh(); }

3、退出系统
基本思路：关闭窗口→释放资源→关闭系统

this.Close(); //if (mExitOperate == -1) //取消关闭//return; //else//{//Process.GetCurrentProcess().Kill(); //System.Environment.Exit(0); //}Process.GetCurrentProcess().Kill(); System.Environment.Exit(0);

这三个基本功能可以满足一个基础的浏览数据的GIS系统。

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说明：后文中可能会出现一些并未声明的变量，极有可能为全局变量，程序中的全局变量如下：

//图层右键private ILayer m_Layer; private ILayer pMoveLayer; private int toIndex; private System.Drawing.Point pMoveLayerPoint; IFeatureLayer pTocFeatureLayer = null; private string sMapUnits = ""; //指北针private INorthArrow m_NorthArrrow; private IElement pElement; private string operation;

若有任何问题，欢迎留言！
【基于AE的基础的GIS系统的开发】