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2009-08-05 17:00:56

arcgis92开始提供了Archiving功能,Enable Archving之后可以建立 不同时间点的版本数据库的链接,也可以建立与某个历史标记 的库的链接,用程序连接sde的时候一般是这样写,
public static  ESRI.ArcGIS.Geodatabase.IWorkspace SDEWorkspaceFromPropertySet(String server, String instance, String user,
                                                                   String password, String database, String version)
        {
            // Create and populate the property set           
            ESRI.ArcGIS.esriSystem.IPropertySet propertySet = new ESRI.ArcGIS.esriSystem.PropertySetClass();
            propertySet.SetProperty("SERVER", server);
            propertySet.SetProperty("INSTANCE", instance);
            propertySet.SetProperty("DATABASE", database);
            propertySet.SetProperty("USER", user);
            propertySet.SetProperty("PASSWORD", password);
            propertySet.SetProperty("VERSION", version);
            ESRI.ArcGIS.Geodatabase.IWorkspaceFactory2 workspaceFactory;
            workspaceFactory = (ESRI.ArcGIS.Geodatabase.IWorkspaceFactory2)new ESRI.ArcGIS.DataSourcesGDB.SdeWorkspaceFactoryClass();
            return workspaceFactory.Open(propertySet, 0);
        }
如果要连接到某个时间点,或者某个历史标记,只需要稍微改变一下SetProperty里面的Key参数就可以了。
//连接到某个时间点:
public static ESRI.ArcGIS.Geodatabase.IWorkspace ConnectHistoryVersion(String server, String instance, String user,
                                                                   String password, String database,  string  versionText)
        {
            // Create and populate the property set           
            ESRI.ArcGIS.esriSystem.IPropertySet propertySet = new ESRI.ArcGIS.esriSystem.PropertySetClass();
            propertySet.SetProperty("SERVER", server);
            propertySet.SetProperty("INSTANCE", instance);
            propertySet.SetProperty("DATABASE", database);
            propertySet.SetProperty("USER", user);
            propertySet.SetProperty("PASSWORD", password);
            //propertySet.SetProperty("VERSION", version);
            propertySet.SetProperty("HISTORICAL_TIMESTAMP", DateTime.Parse(versionText) );
            ESRI.ArcGIS.Geodatabase.IWorkspaceFactory2 workspaceFactory;
            workspaceFactory = (ESRI.ArcGIS.Geodatabase.IWorkspaceFactory2)new ESRI.ArcGIS.DataSourcesGDB.SdeWorkspaceFactoryClass();
            return workspaceFactory.Open(propertySet, 0);
        }

//链接到某个历史标记
        public static ESRI.ArcGIS.Geodatabase.IWorkspace ConnectHistoryMarker(String server, String instance, String user,
                                                                   String password, String database, string versionText)
        {
            // Create and populate the property set           
            ESRI.ArcGIS.esriSystem.IPropertySet propertySet = new ESRI.ArcGIS.esriSystem.PropertySetClass();
            propertySet.SetProperty("SERVER", server);
            propertySet.SetProperty("INSTANCE", instance);
            propertySet.SetProperty("DATABASE", database);
            propertySet.SetProperty("USER", user);
            propertySet.SetProperty("PASSWORD", password);
            propertySet.SetProperty("HISORICALMARKER", versionText);
            //propertySet.SetProperty("VERSION", versionText);
            //propertySet.SetProperty("HISTORICAL_TIMESTAMP", dt);
            ESRI.ArcGIS.Geodatabase.IWorkspaceFactory2 workspaceFactory;
            workspaceFactory = (ESRI.ArcGIS.Geodatabase.IWorkspaceFactory2)new ESRI.ArcGIS.DataSourcesGDB.SdeWorkspaceFactoryClass();
            return workspaceFactory.Open(propertySet, 0);
        }

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