C# Array IndexOf(T[], T)

Description

Array IndexOf(T[], T)searches for the specified object and returns the index of the first occurrence within the entire Array.

Syntax

Array.IndexOf(T[], T) has the following syntax.

public static int IndexOf<T>(
  T[] array,
  T value
)

Parameters

Array.IndexOf(T[], T) has the following parameters.

• T - The type of the elements of the array.
• array - The one-dimensional, zero-based Array to search.
• value - The object to locate in array.

Returns

Array.IndexOf(T[], T) method returns The zero-based index of the first occurrence of value within the entire array, if found; otherwise, -1.

Example

The following code example demonstrates all three generic overloads of the IndexOf method.

/*from   w  ww.  j a  v  a2 s . com*/
using System;

public class Example
{
    public static void Main()
    {
        string[] myValues = { "2001",
            "1999",
            "2000",
            "1234",
            "2002",
            "2001",
            "4567" };


        Console.WriteLine(Array.IndexOf(myValues, "2001"));

        Console.WriteLine(Array.IndexOf(myValues, "2001", 3));

        Console.WriteLine(Array.IndexOf(myValues, "2001", 2, 2));
    }
}

The code above generates the following result.