关于异常来自 HRESULT:0x80040351

1.企业数据库（SDE）

企业数据库需要使用SDE来管理，所以需要使用SDE的Workspace来表示连接。在AE接口中，Workspace是由Factory打开的。代码如下：

//准备连接参数
ESRI.ArcGIS.esriSystem.IPropertySet pPropSet=new PropertySetClass();

pPropSet.SetProperty("server","服务器机器名" );

pPropSet.SetProperty("instance","SDE运行的端口号");

pPropSet.SetProperty("user","用户名");

pPropSet.SetProperty("password","口令" );

pPropSet.SetProperty("version","版本");

SdeWorkspaceFactory sdeWkspFact=new SdeWorkspaceFactoryClass();

IFeatureWorkspace pFeaWksp=(IFeatureWorkspace)sdeWkspFact.Open(pPropSet,0);

其中唯一需要解释的可能就是版本(version).对于没有使用版本或者第一次连接(没有建立空间数据库，当然没有版本了). 该处使用sde.DEFAULT这个版本。这是默认的版本。

iPropertySet:: setProperty

public void setProperty(string name,object value)


2.个人数据库(PersonalGeodatabase、FileGeodatabase)

ArcEngine中个人数据库为Access。

string filePath="E:\\tt.mdb";

AccessWorkspaceFactory fac=new AccessWorkspaceFactoryClass();

IFeatureWorkspace space=(IFeatureWorkspace)fac.OpenFromFile(filePath,0); 这是用的最多的一种方式.

如果是FileGeodatabasse,则将

FileGDBWorkspaceFactory pWSF = New FileGDBWorkspaceFactory;

IFeatureWorkspace pWS1= pWSF.OpenFromFile(sPath, 0);

 

如果用IPropertySet。如下：

//Personal Geodatabase e.g., database = "C:\\myData\\mypGDB.mdb"

public IWorkspace open_pGDB_Workspace(string database)

{

IPropertySet propertySet = new PropertySetClass();

propertySet.SetProperty("DATABASE", database);

IWorkspaceFactory workspaceFactory = new AccessWorkspaceFactoryClass();

return workspaceFactory.Open(propertySet, 0);

}


3.Shapefile文件

   Shapefile和Access的打开方式有一点相同。也有差异。

//这是Shape所在的目录(注意：是目录)

string spacePath="E:\\shapefile";

IShapefileWorkspaceFactory fac=new ShapefileWorkspaceFactoryClass(); IFeatureWorkspace space=(IFeatureWorkspace)fac.OpenFromFile(spacePath,0);

IFeatureClass fc=space.openFeatureClass(“china”);


4.AutoCAD dwg文件

   AutoCAD文件和一般的ESRI格式不同。所以代码会有一点点奇怪。假设有一个dwg文件为E:\\cad\\107.dwg 下面是打开的代码：

CadWorkspaceFactoryClass fac=new CadWorkspaceFactoryClass ();

String filePath="E:\\cad";

IFeatureWorkspace space=fac.OpenFromFile(filePath,0) as IFeatureWorkspace ;

下面是打开FeatureClass的代码：

//线

IFeatureClass polyline =space.OpenFeatureClass("107.dwg:Polyline");

IFeatureLayer layer=new CadFeatureLayerClass ();

layer.FeatureClass =polyline;

//点

IFeatureClass point=space.OpenFeatureClass ("107.dwg:Point");

layer=new CadFeatureLayerClass ();

layer.FeatureClass =point;

//面

IFeatureClass polygon=space.OpenFeatureClass ("107.dwg:Polygon");

layer=new CadFeatureLayerClass();

layer.FeatureClass =polygon;

//注记

IFeatureClass anno=space.OpenFeatureClass ("107.dwg:Annotation"); layer=new CadAnnotationLayerClass();

layer.FeatureClass =anno;


5.影像图文件

//文件路径

string filePath="E:\\image\\117.tif";

IRasterLayer rasterLayer=new RasterLayerClass();

rasterLayer.CreateFromFilePath(filePath );


6.数据库中的影像数据集。

//数据库连接

IWorkspace space=OpenSpace();

//打开数据库的方式

IRasterWorkspaceEx rasterSpace=(IRasterWorkspaceEx)space;

IRasterDataset rasterDataset=rasterSpace.OpenRasterDataset (setName.Name );

IRasterLayer rasLayer=new RasterLayerClass();

rasLayer.CreateFromDataset(rasterDataset);

IRasterWorkspaceEx:提供创建和打开栅格目录或栅格数据集的方法。

但是IRasterWorkspaceEx，IRasterWorkspace, IRasterWorkspace2都有OpenRasterDataset。IRasterWorkspace经常也可用于打开栅格数据，如：
pWorkspaceFactory = new RasterWorkspaceFactoryClass();
pRasterWorkspace = (IRasterWorkspace)pWorkspaceFactory.OpenFromFile(filePath, 0);
IRasterDataset pRasterDataset = (IRasterDataset)pRasterWorkspace.OpenRasterDataset(fileName);
IRasterLayer pRasterLayer = new RasterLayerClass();
pRasterLayer.CreateFromDataset(pRasterDataset);