Possibility of Accessing Objects

Most collections of objects which are components of GDB or the shared library support access both by name of the object and by its internal number using the Item method. A number of collections do not support access to object by name. Applications need information about continuity of sequence of object internal numbers when they try to get objects by their internal numbers. Most collections do not support continuity of object internal numbers. If a collection supports continuous sequence of object internal numbers, this fact is marked in the collection description. In this case the minimum number of object is always 1 and the maximum number corresponds to the value that the Count property returns. The table below defines possibility of accessing objects by their names and internal numbers.

Collection	Access by name	Access by number
DataLink::IndirectFieldsPairs	Impossible	Possible, number continuity
ExternalDatabase::Queries	Possible	Possible
ExternalDatabase::Recordsets	Possible	Possible
ExternalDatabase::Tables	Possible, see the description of the ExternalDatabase::Tables collection for how to form names	Possible, number continuity, persistence of number until closing an external database.
Feature::Themes	Possible	Possible
FeatureType::DataLinks	Impossible	Possible, number continuity
FeatureType::FilterGroups	Possible	Possible, number continuity
Field::PrimaryKeys	Possible	Possible
FilterGroup::FilterConditions	Impossible	Possible, number continuity
ForeignKey::Fields	Possible	Possible
GDBEngine::ExternalDatabaseErrors	Impossible	Possible, number continuity
GDBEngine::GeoDatabases	Possible	Possible
GeoDatabase::ExternalDatabases	Possible	Possible only for cataloged external databases
GeoDatabase::Featuresets	Possible	Possible
GeoDatabase::Layouts	Possible	Possible
GeoDatabase::Maps	Possible	Possible
GeoDatabase::Queries	Possible	Possible
GeoDatabase::Recordsets	Possible	Possible
GeoDatabase::Sessions	Impossible	Possible
GeoDatabase::Tables	Possible	Possible
GeoDatabase::TemporaryTables	Possible	Possible
GeoDatabase::Themes	Possible	Possible
GeoDatabase::Users	Possible	Possible
Geocoder::LinkScheme	Impossible	Possible
Geocoder::RefScheme	Impossible	Possible
GeocoderTableJoining::FieldPairs	Impossible	Possible
Layer::FeatureTypes	Possible	Possible
Layout::Elements	Possible	Possible
LayoutChartLegend::Keys	Possible, labels of series are used as names	Possible, number continuity
Legend::LegendItems	Possible	Possible
LegendItem:: LegendItems	Possible	Possible
Library::FillStyles	Possible	Possible
Library::Fonts	Possible	Possible
Library::HatchStyles	Possible	Possible
Library::LineStyles	Possible	Possible
Library::MapSymbols	Possible	Possible
Map::Layers	Possible	Possible
PrimaryKey::Fields	Possible	Possible
Query::Fields	Possible	Possible, number continuity
Query::FieldSearchConditions	Impossible	Possible, number continuity
Query::FieldSortConditions	Impossible	Possible, number continuity
Query::SQLParameters	Impossible	Possible
Recordset::Fields	Possible	Possible, number continuity
Recordset::KeyFields	Possible	Possible
Recordset::SQLParameters	Impossible	Possible
SharedLibrary::FillStyles	Possible	Possible
SharedLibrary::Fonts	Possible	Possible
SharedLibrary::HatchStyles	Possible	Possible
SharedLibrary::LineStyles	Possible	Possible
SharedLibrary::MapSymbols	Possible	Possible
SharedLibrary::Sessions	Impossible	Possible
Table::Fields	Possible	Possible
Table::ForeignKeys	Possible	Possible, number continuity, persistence of number until closing an external database.
Table::PrimaryKeys	Possible	Possible, number continuity, persistence of number until closing an external database
Table::SpecialFields	Possible	Possible, number continuity, persistence of number until closing an external database
Table::TableIndexes	Possible	Possible, number continuity, persistence of number until closing an external database
TableIndex::Fields	Possible	Possible
Theme::FeaturesetConditions	Impossible	Possible, number continuity
Theme::Layers	Possible	Possible
Theme::ScaleZones	Impossible	Possible, number continuity