ArcGIS Developer Help

INamedSet Interface

Provides access to a collection of named items.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server. Requires Network Analyst Extension.

Members

	Name	Description
	Add	Add a new named item to the collection.
	Count	The number of items in the collection.
	Item	The item at a given index.
	ItemByName	The item corresponding to a given name.
	Name	The name of the item at a given index.
	Remove	Remove an item from the collection by reference.
	RemoveAll	Empty the collection and remove all items.

Classes that implement INamedSet

Classes	Description
NamedSet	A collection class with access to the items by index or name.

Remarks

The INamedSet interface provides methods to Add, Remove, and retrieve objects in a NamedSet.

You can retrieve an object stored in a NamedSet by calling Item and passing in an index from 0 to Count - 1 or you can retrieve an object by calling ItemByName.

[C#]

The following C# code shows how you can get the Barriers NAClass from the NAContext's NamedSet object using INamedSet.ItemByName.

public void GetBarrierNAClass(INALayer naLayer)
{

  // Get the Current NAContext
  INAContext naContext = naLayer.Context;
  
  // Get the NAClass from the NamedSet of NAClasses
  INAClass naClass = naContext.NAClasses.get_ItemByName("Barriers") as INAClass;
  
  // Do something with the NAClass
  MessageBox.Show(naClass.ClassDefinition.Name);
}

[Visual Basic .NET]

The following VB.NET code shows how you can get the Barriers NAClass from the NAContext's NamedSet object using INamedSet.ItemByName.

Public  Sub GetBarrierNAClass(ByVal naLayer as INALayer)
  ' Get the Current NAContext
  Dim naContext As INAContext = naLayer.Context

  ' Get the NAClass from the NamedSet of NAClasses
  Dim naClass As INAClass = naContext.NAClasses.ItemByName("Barriers")

  ' Do something with the NAClass
  MessageBox.Show(naClass.ClassDefinition.Name)
End Sub

.NET Samples

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