IList<T>.IndexOf(T) Method

Reference

Definition

Namespace:: System.Collections.Generic

Assembly:: System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Important

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

public:
 int IndexOf(T item);

public int IndexOf (T item);

abstract member IndexOf : 'T -> int

Public Function IndexOf (item As T) As Integer

Parameters

item: T

The object to locate in the IList<T>.

Returns

Int32

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

Remarks

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

Applies to

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