Question

How to extract the last number from a string in VB.NET

Answer 1

Imports System
Imports System.Linq

Public Class Program
	Public Shared Sub Main()
        Dim str As String = "98 vb programming 15"
		
        Dim number As Integer = Integer.Parse(str.Split().Last())
		
        Console.Write(number)
    End Sub
End Class



' run:
'
' 15
'

 

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Answer 2

Imports System
Imports System.Text.RegularExpressions

Public Class Program
	Public Shared Sub Main()
        Dim str As String = "98 vb programming15"
		
        Dim arr As String() = Regex.Split(str, "\D+")
		
        Dim number As Integer = Integer.Parse(arr(arr.Length - 1))
		
        Console.Write(number)
    End Sub
End Class




' run:
'
' 15
'

 

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Answer 3

Imports System
Imports System.Text.RegularExpressions

Public Class Program
    Public Shared Function get_last_number(ByVal str As String) As Integer
        Dim arr As String() = Regex.Split(str, "\D+")
        
		Return Integer.Parse(arr(arr.Length - 1))
    End Function

    Public Shared Sub Main()
        Dim str As String = "98 vb 22 programming15"
		
        Dim number As Integer = get_last_number(str)
		
        Console.Write(number)
    End Sub
End Class





' run:
'
' 15
'

 

70+ SQL courses for beginners and professionals