GIS二次开发之不同类型的数据的打开显示
1．打开VS，新建C#窗体应用程序
2.拖拉容器控件：SplitContainer
3.向SplitContainer中添加Arcgis Windows Forms MapControl控件，并且设置其dock属性为fill
4.向MapControl中添加LicenseControl控件，该控件是用来为其它控件进行授权许可，运行时不会显示，因此不需设置其位置形状
5.此时若直接点击运行，会提示错误，原因是没有在程序运行之前添加：ESRI.ArcGIS.RuntimeManager.Bind(ESRI.ArcGIS.ProductCode.EngineOrDesktop);
6.解决方案就是通过双击Program.cs进入代码段，在Application.Run(new Form1());语句之前输入ESRI.ArcGIS.RuntimeManager.Bind(ESRI.ArcGIS.ProductCode.EngineOrDesktop);
7.此时程序可以正常运行
8.根据自己的数据使用要求，添加引用，将自己需要的数据类型都添加进去
9.在Form1.cs代码段前添加using引用
10.向容器中添加button按钮，该按钮需要实现的功能是打开矢量数据
11.在button中添加click响应事件
1 namespace WindowsFormsApplication1 2 { 3 public partial class Form1 : Form 4 { 5 public Form1() 6 { 7 InitializeComponent(); 8 } 9 OpenFileDialog open = new OpenFileDialog(); 10 string allname; //保存文件的路径加文件名加后缀名 11 string location; //保存文件的路径 12 string filename; //保存文件的名称 13 string ext;//保存文件的后缀名 14 15 private void button1_Click(object sender, EventArgs e) 16 { 17 try 18 { 19 20 open.ShowDialog(); 21 allname = open.FileName; 22 location = System.IO.Path.GetDirectoryName(allname); /*获得文件的路径*/ 23 filename = System.IO.Path.GetFileName(allname); /*获得文件的文件名*/ 24 ext = System.IO.Path.GetExtension(allname).ToLower();/*获得打开文件的后缀名*/ 25 axMapControl1.ClearLayers(); 26 if (ext == ".tif") 27 { 28 IWorkspaceFactory workspcFac = new RasterWorkspaceFactory(); 29 IRasterWorkspace rasterworkspc; 30 IRasterDataset rasterDatst = new RasterDatasetClass(); 31 IRasterLayer layer = new RasterLayer();/*创建raster的相关展示控件*/ 32 rasterworkspc = workspcFac.OpenFromFile(location, 0) as IRasterWorkspace; 33 rasterDatst = rasterworkspc.OpenRasterDataset(filename); 34 layer.CreateFromDataset(rasterDatst); 35 36 axMapControl1.AddLayer(layer); 37 axMapControl1.Refresh(); 38 39 } 40 if (ext == ".shp") 41 { 42 IWorkspaceFactory pworkspacefactory; 43 IFeatureWorkspace pfeatureworkspace; 44 IFeatureClass pfeatureclass; 45 IFeatureLayer layer;/*创建shapfile的相关展示控件*/ 46 pworkspacefactory = new ShapefileWorkspaceFactoryClass(); 47 pfeatureworkspace = pworkspacefactory.OpenFromFile(location, 0) as IFeatureWorkspace; 48 pfeatureclass = pfeatureworkspace.OpenFeatureClass(filename); 49 layer = new FeatureLayer(); 50 layer.FeatureClass = pfeatureclass; 51 axMapControl1.AddLayer(layer); 52 axMapControl1.Refresh(); 53 } 54 if (ext == ".dwg" || ext == "dxf") 55 { 56 CadWorkspaceFactoryClass fac = new CadWorkspaceFactoryClass(); 57 IFeatureWorkspace space = fac.OpenFromFile(location, 0) as IFeatureWorkspace;/*创建cad的相关展示控件*/ 58 IFeatureClass polyline = space.OpenFeatureClass(filename + ":polyline"); 59 IFeatureLayer layer1 = (IFeatureLayer)new CadFeatureLayer(); 60 layer1.FeatureClass = polyline; 61 62 63 IFeatureClass point = space.OpenFeatureClass(filename + ":point"); 64 IFeatureLayer layer2 = (IFeatureLayer)new CadFeatureLayer(); 65 layer2.FeatureClass = point; 66 67 IFeatureClass polygon = space.OpenFeatureClass(filename + ":polygon"); 68 IFeatureLayer layer3 = (IFeatureLayer)new CadFeatureLayer(); 69 layer3.FeatureClass = polygon; 70 71 IFeatureClass anno = space.OpenFeatureClass(filename + ":Annotation"); 72 IFeatureLayer layer = (IFeatureLayer)new CadAnnotationLayer(); 73 layer.FeatureClass = anno; 74 75 axMapControl1.AddLayer(layer1); 76 axMapControl1.AddLayer(layer2); 77 axMapControl1.AddLayer(layer3); 78 79 axMapControl1.AddLayer(layer); 80 axMapControl1.Refresh(); 81 82 } 83 else 84 { 85 MessageBox.Show("该文件类型不支持打开！"); 86 } 87 88 } 89 catch 90 { 91 MessageBox.Show("打开文件失败"); 92 } 93 94 95 }
