ArcGIS Developer Help

INetSchemaEdit Interface

Provides access to members that modify the schema of the network.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

When To Use

Use the INetSchemaEdit interface when you want to make changes to your network schema. For example, you can add a new weight and weight association to your network.

This interface is designed specifically for the editing of a stand-alone logical network, which does not have an associated geometric network. It is imperative that if you have a geometric network, the logical network must be edited through its associated geometric network. You risk data corruption if you use the INetSchemaEdit interface on logical networks that have an associated geometric network. For building the schema of a new geometric network, use the Build Geometric Network Wizard or the NetworkLoader object.

Changes in schema must be made when the network has no topology. When you create a new logical network, the schema should be set up first, before any topology is added to the network.

Members

	Name	Description
	AddElementClass	Adds a new element class to the network.
	AddWeight	Adds a new weight to the network.
	AddWeightAssociation	Adds a new weight association to the network.
	ElementClass	Element class by index.
	ElementClassByUserID	Element class corresponding to the specified user class ID.
	ElementClassCount	Number of element classes in the network.
	GetAncillaryRole	Returns the ancillary role type and the name of the field containing the ancillary role information.
	GetEnabledDisabledFieldName	Returns the name of the filed containing the enabled/disabled information for the specified user class.
	PutAncillaryRole	Sets the ancillary role type and the name of the field containing the ancillary role information for the specified user class.
	PutEnabledDisabledFieldName	Sets the name of the field containing the enabled/disabled information for the specified user class.
	Weight	Network weight corresponding to the specified weight internal ID.
	WeightAssociations	Network weight associations corresponding to the specified weight internal ID.
	WeightAssociationsByTableName	Network weight associations corresponding to the specified table name.
	WeightByName	Network weight corresponding to the specified name.
	WeightCount	Number of weights in the network.

Inherited Interfaces

Interfaces	Description
INetSchema	Provides access to members that get information about the schema of the network.

Classes that implement INetSchemaEdit

Classes	Description
StreetNetwork	A container for describing a street network.
UtilityNetwork	A container for describing a utility network.

Remarks

Adding Element Classes

The AddElementClass method should only be used for adding element classes to a stand-alone logical network.

Adding Weights
Weights can be added to a network but you do not have the ability to remove weights once they have been added.

See the help for the INetWeightEdit interface to learn how to create a NetWeight object.