GDAL_CSharp环境配置

GDAL_CSharp环境配置一、GDALC#DLL下载位于压缩包中的位置：bin\gdal\csharp\...目录下：开发时把以_csharp.dll结尾的添加到项目引用，其余的拷贝到bebug目录下。二、在调用Gdal.AllRegister()方法时报异常：“OSGeo.GDAL.GdalPINVOKE”的类型初始值设定项引发异常。原因分析：gdal初始化时，其依赖dll项不全导致异常，可采用DependencyWalker工具查看相关依赖项。把九个DLL拷贝到debug是不能解决问题的。解决方法：采用SharpMap的GDAL初始化方法，需要两个数据：1.GdalConfiguration.cs2.gdal_data_config.rar第一步：将GdalConfiguration.cs添加到项目中，然后解压gdal_data_config.rar到debug目录下，文件夹名称为gdal。第二步：在使用Gdal.AllRegister()初始化前，调用以下两句代码进行相关初始化数据的配置即可。SharpMap.GdalConfiguration.ConfigureGdal();SharpMap.GdalConfiguration.ConfigureOgr();附件1：GdalConfiguration.cs/********************************************************************************Name:  GdalConfiguration.cs.pp*Project: GDALCSharpInterface*Purpose: AstaticconfigurationutilityclasstoenableGDAL/OGR.*Author: FelixObermaier******************************************************************************/usingSystem;usingSystem.IO;usingSystem.Reflection;usingGdal=OSGeo.GDAL.Gdal;usingOgr=OSGeo.OGR.Ogr;namespaceSharpMap{publicstaticpartialclassGdalConfiguration{privatestaticbool_configuredOgr;privatestaticbool_configuredGdal;///

///Functiontodeterminewhichplatformwe'reon///

privatestaticstringGetPlatform(){returnIntPtr.Size==4?"x86":"x64";}///

///ConstructionofGdal/Ogr///

staticGdalConfiguration(){varexecutingAssemblyFile=newUri(Assembly.GetExecutingAssembly().GetName().CodeBase).LocalPath;varexecutingDirectory=Path.GetDirectoryName(executingAssemblyFile);if(string.IsNullOrEmpty(executingDirectory))thrownewInvalidOperationException("cannotgetexecutingdirectory");vargdalPath=Path.Combine(executingDirectory,"gdal");varnativePath=Path.Combine(gdalPath,GetPlatform());//Prependnativepathtoenvironmentpath,toensurethe//rightlibsarebeingused.varpath=Environment.GetEnvironmentVariable("PATH");path=nativePath+";"+Path.Combine(nativePath,"plugins")+";"+path;Environment.SetEnvironmentVariable("PATH",path);//SettheadditionalGDALenvironmentvariables.vargdalData=Path.Combine(gdalPath,"data");Environment.SetEnvironmentVariable("GDAL_DATA",gdalData);Gdal.SetConfigOption("GDAL_DATA",gdalData);vardriverPath=Path.Combine(nativePath,"plugins");Environment.SetEnvironmentVariable("GDAL_DRIVER_PATH",driverPath);Gdal.SetConfigOption("GDAL_DRIVER_PATH",driverPath);Environment.SetEnvironmentVariable("GEOTIFF_CSV",gdalData);Gdal.SetConfigOption("GEOTIFF_CSV",gdalData);varprojSharePath=Path.Combine(gdalPath,"share");Environment.SetEnvironmentVariable("PROJ_LIB",projSharePath);Gdal.SetConfigOption("PROJ_LIB",projSharePath);}///

///Methodtoensurethestaticconstructorisbeingcalled.///

///BesuretocallthisfunctionbeforeusingGdal/Ogr/OsrpublicstaticvoidConfigureOgr(){if(_configuredOgr)return;//RegisterdriversOgr.RegisterAll();_configuredOgr=true;PrintDriversOgr();}///

///Methodtoensurethestaticconstructorisbeingcalled.///

///BesuretocallthisfunctionbeforeusingGdal/Ogr/OsrpublicstaticvoidConfigureGdal(){if(_configuredGdal)return;//RegisterdriversGdal.AllRegister();_configuredGdal=true;PrintDriversGdal();}privatestaticvoidPrintDriversOgr(){#ifDEBUGvarnum=Ogr.GetDriverCount();for(vari=0;i