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ActivityCollection.IList<Activity>.IndexOf Method

Determines the index of a specific item in the IList.

Namespace:  System.Workflow.ComponentModel
Assembly:  System.Workflow.ComponentModel (in System.Workflow.ComponentModel.dll)

int IList<Activity>.IndexOf(
	Activity item


Type: System.Workflow.ComponentModel.Activity

The object to locate in the IList.

Return Value

Type: System.Int32
The index of item if found in the list; otherwise, -1.



If an object occurs multiple times in the list, the IndexOf method always returns the first instance found.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5, 3.0