Question

How to use Array.LastIndexOf() method to find the last index of a specified element in 1D Array in VB.NET

Answer 1

Module Module1

    Sub Main()

        Dim arr As String() = {"aaa", "bbb", "ccc", "ddd", "eee", "aaa"}

        Console.WriteLine(Array.LastIndexOf(arr, "aaa"))

    End Sub

End Module

' run:
' 
' 5

 

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Answer 2

Module Module1

    Sub Main()

        Dim arr As String() = {"aaa", "bbb", "ccc", "ddd", "eee", "aaa"}

        Console.WriteLine(Array.LastIndexOf(arr, "aaa", 2))

    End Sub

End Module

' run:
' 
' 0

 

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Answer 3

Module Module1

    Sub Main()

        Dim arr As String() = {"aaa", "bbb", "ccc", "aaa", "ddd", "eee", "aaa"}

        Console.WriteLine(Array.LastIndexOf(arr, "aaa", 5, 4))

    End Sub

End Module

' run:
' 
' 3

 

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