AE实现投影定义和投影转换

添加引用ESRI.ArcGIS.DataManagementTools

1.获取要定义和要转换的投影

 IWorkspaceFactory wsf = new ShapefileWorkspaceFactoryClass();
 IWorkspace ws = wsf.OpenFromFile(strProjPath,);
 IFeatureClass fc = (ws as IFeatureWorkspace).OpenFeatureClass("路中心线");
 ProSpaRef = (fc as IGeoDataset).SpatialReference;
 IFeatureClass fc1 = (ws as IFeatureWorkspace).OpenFeatureClass("路中心线_Project");
 GeoSpaRef = (fc1 as IGeoDataset).SpatialReference;

2.为shp文件定义投影

 Geoprocessor gp = new Geoprocessor();
 DefineProjection defPro = new DefineProjection();
 defPro.in_dataset = strFile;
 defPro.coor_system = ProSpaRef;
 gp.Execute(defPro, null);

3.投影转换

 Project defGeo = new Project();
 defGeo.in_dataset = strFile;
 defGeo.in_coor_system = ProSpaRef;
 defGeo.out_coor_system = GeoSpaRef;
 defGeo.out_dataset = strFoldPath + @"\" + strNewname + strExtension;
 gp.Execute(defGeo, null);