Question

How to validate a 10-digit phone number with hyphens (e.g. 333-555-1234) using RegEx in VB.NET

Answer 1

Imports System
Imports System.Text.RegularExpressions

Public Class Program
	Public Shared Sub Main()
        Dim pattern As String = "^\d{3}-\d{3}-\d{4}$"
        Dim phone_number As String = "333-555-1234"

        If Regex.IsMatch(phone_number, pattern) Then
            Console.WriteLine("The phone number is valid")
        Else
            Console.WriteLine("The phone number is invalid")
        End If
    End Sub
End Class



' run:
'
' The phone number is valid
' 

 

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