Question

How to search string from the right (reverse) in VB.NET

Answer 1

Module Module1

    Sub Main()

        Dim s As String = "Star Wars is great movie"

        Dim i As Integer = s.LastIndexOf("i")

        If (i <> -1) Then
            Console.WriteLine(i)
            Console.WriteLine(s.Substring(i))
        End If

    End Sub

End Module

'run:
'
'22
'ie

 

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Answer 2

Module Module1

    Sub Main()

        Dim s As String = "Star Wars is great movie. Star Trek is also a great movie"

        Dim i As Integer = s.LastIndexOf("great")

        If (i <> -1) Then
            Console.WriteLine(i)
            Console.WriteLine(s.Substring(i))
        End If

    End Sub

End Module

'run:
'
'46
'great movie

 

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Answer 3

Module Module1

    Sub Main()

        Dim s As String = "Star Wars is GREAT movie. Star Trek is also a Great movie"

        ' ignor the case
        Dim i As Integer = s.LastIndexOf("great", StringComparison.OrdinalIgnoreCase)

        If (i <> -1) Then
            Console.WriteLine(i)
            Console.WriteLine(s.Substring(i))
        End If

    End Sub

End Module

'run:
'
'46
'great movie

 

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