System.Collections.IList.IndexOf Method

Determines the index of a specific item in the IList.

Syntax

public int IndexOf (object value)

Parameters

value
The object to locate in the IList.

Returns

The index of value if found in the list; otherwise, -1.

Remarks

Starting with the .NET Framework 2.0, this method uses the collection’s objects’ object.Equals(object) and IComparable.CompareTo(object) methods on item to determine whether item exists. In the earlier versions of the .NET Framework, this determination was made by using the object.Equals(object) and IComparable.CompareTo(object) methods of the item parameter on the objects in the collection.

Requirements

Namespace: System.Collections
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0, 4.0.0.0