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RouteCollection.SetItem Method

Replaces the route at the specified index.

Namespace:  System.Web.Routing
Assembly:  System.Web (in System.Web.dll)

Protected Overrides Sub SetItem ( _
	index As Integer, _
	item As RouteBase _


Type: System.Int32
The zero-based index of the route to replace.
Type: System.Web.Routing.RouteBase
The route to add at the specified index.


item is Nothing.


item is already in the collection.

When you add an unnamed route to the RouteCollection object, you cannot add a route that already is in the collection.

Use the GetReadLock method and the GetWriteLock method to make sure that you interact with the collection without conflicts from other processes.

.NET Framework

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.