利用Arcengine 直接加载shp文件

 

转载自：http://www.gisall.com/html/40/145240-5406.html

 

AE中shp文件的加载

步骤：

1） 创建工作空间工厂

2） 打开shapefile工作空间

3） 打开要素类

4） 创建要素图层

5） 关联图层和要素类

6） 添加到地图空间

具体代码（后面数字为对应的步骤）：

new ShapefileWorkspaceFactory (); // 1

openFileDialog1.Filter="shaperfile(*.shp)|*.shp";

openFileDialog1.InitialDirectory=@"E:\test\文档和数据\Data";

openFileDialog1.Multiselect=false;

DialogResult pDialogResult=openFileDialog1.ShowDialog ();

if(pDialogResult !=DialogResult.OK)

return;

string pPath=openFileDialog1 .FileName;

string pFolder=Path.GetDirectoryName (pPath);

string pFileName=Path.GetFileName(pPath);

IWorkspace pWorkspace=pWorkspaceFactory .OpenFromFile(pFolder ,0); // 2

IFeatureWorkspace pFeatureWorkspace =pWorkspace as IFeatureWorkspace ;

IFeatureClass pFC=pFeatureWorkspace .OpenFeatureClass (pFileName ); //3

IFeatureLayer pFLayer=new FeatureLayerClass (); // 4

pFLayer.FeatureClass =pFC;

pFLayer.Name =pFC.AliasName ; // 5

ILayer pLayer=pFLayer as ILayer ;

IMap pMap=axMapControl1.Map ;

pMap.AddLayer(pLayer); // 6

axMapControl1.ActiveView .Refresh ();

-----------------------------------------------------------------------------------------------------------

//添加ArcGIS命名空间

using ESRI.ArcGIS.Carto;

using ESRI.ArcGIS.Geometry;

using ESRI.ArcGIS.Geodatabase;

using ESRI.ArcGIS.DataSourcesFile;

using ESRI.ArcGIS.DataSourcesRaster;

//存储打开文件的全路径

string fullFilePath;

//设置OpenFileDialog的属性，使其能打开多种类型文件

OpenFileDialog penFile = new OpenFileDialog();

openFile.Filter = "shape文件(*.shp)|*.shp|";

openFile.Filter +="栅格数据(*.jpg,*.bmp,*.tiff)|*.jpg;*.bmp;*.tiff|";

openFile.Filter +="地图文档(*.mxd,*.mxt,*.jmf)|*.mxd;*.mxt;*.jmf";

openFile.Title = "打开文件";

try

{

if (openFile.ShowDialog() == DialogResult.OK)

{

fullFilePath = openFile.FileName;

//获得文件路径

int index = fullFilePath.LastIndexOf("\");

string filePath = fullFilePath.Substring(0, index);

//获得文件名称

string fileNam = fullFilePath.Substring(index + 1);

//加载shape文件

if (openFile.FilterIndex == 1)

{

//打开工作空间工厂

IWorkspaceFactory workspcFac = new ShapefileWorkspaceFactory();

IFeatureWorkspace featureWorkspc;

IFeatureLayer featureLay = new FeatureLayerClass();

//打开路径

featureWorkspc = workspcFac.OpenFromFile(filePath, 0) as IFeatureWorkspace;

//打开类要素

featureLay.FeatureClass = featureWorkspc.OpenFeatureClass(fileNam);

//清空图层

axMapControl1.ClearLayers();

//添加图层

axMapControl1.AddLayer(featureLay);

axMapControl1.Refresh();

}

//加载栅格图像

else if (openFile.FilterIndex == 2)

{

IWorkspaceFactory workspcFac = new RasterWorkspaceFactory();

IRasterWorkspace rasterWorkspc;

IRasterDataset rasterDatst = new RasterDatasetClass();

IRasterLayer rasterLay = new RasterLayerClass();

rasterWorkspc = workspcFac.OpenFromFile(filePath, 0) as IRasterWorkspace;

rasterDatst = rasterWorkspc.OpenRasterDataset(fileNam );

rasterLay.CreateFromDataset(rasterDatst);

axMapControl1.ClearLayers();

axMapControl1.AddLayer(rasterLay);

axMapControl1.Refresh();

}

//加载地图文档

else if (openFile.FilterIndex == 3)

{

IMapDocument mapDoc = new MapDocumentClass();

mapDoc.Open(filePath ,"");

axMapControl1.ClearLayers();

for (int i = 0; i < mapDoc.MapCount - 1; i++)

{

axMapControl1.Map =mapDoc.get_Map (i);

}

IActiveView activeViw = axMapControl1.Map as IActiveView;

activeViw.Extent = axMapControl1.FullExtent;

axMapControl1.Refresh();

}

}

}

catch (Exception ex)

{

MessageBox.Show(ex.Message.ToString ());

}

}

}

 

 

 

原文链接：

http://hi.baidu.com/galileo0405/blog/item/6689be922a431381a977a4bd.html