IList<T>.IndexOf Method (T)


Determines the index of a specific item in the IList<T>.

Namespace:   System.Collections.Generic
Assembly:  mscorlib (in mscorlib.dll)

int IndexOf(
	T item


Type: T

The object to locate in the IList<T>.

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.

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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