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VB.Net program to demonstrate the LastIndexOf() method of Array class

Here, we are going to demonstrate the LastIndexOf() method of Array class in VB.Net.
Submitted by Nidhi, on January 20, 2021 [Last updated : March 07, 2023]

Array.LastIndexOf() Method in VB.Net

The LastIndexOf() method is used to search the item within the array and return the index of the last occurrence of the item.

Syntax

Function LastIndexOf (ByVal arr() as object, Byval item as integer) as Integer

Parameter(s)

• arr: It is the specified integer array.
• Item: Item to be searched within the array.

Return Value

It returns the index of the last occurrence of the item within the array.

VB.Net code to demonstrate the example of Array.LastIndexOf() method

The source code to demonstrate the LastIndexOf() method of the Array class is given below. The given program is compiled and executed successfully.

'VB.NET program to demonstrate the LastIndexOf() 
'method of Array class.

Imports System

Module Module1
    Sub Main()
        Dim arr() As Integer = {10, 20, 30, 20, 30}
        Dim index As Integer

        'Search the specified item in the array and return 
        'the index of the last occurrence of an item.
        index = Array.LastIndexOf(arr, 20)

        Console.WriteLine("Index of last occurrence of item {0} is: {1}", 20, index)
        Console.WriteLine()
    End Sub
End Module

Output

Index of last occurrence of item 20 is: 3
Press any key to continue . . .

Explanation

In the above program, we created a module Module1 that contains the Main() function. The Main() function is the entry point for the program.

In the Main() function, we created an array arr1. Then we get the index of the last occurrence of the item within the array using LastIndexOf() method of the Array class. After that, we printed the index of the item on the console screen.

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