validate phone number or fax number based on culture

Edited

I doubt without using regualr expression you could validate the format of the numbers.

However you could validate number itself irrespective of its format in the following way. Here only digits of a number are retrieved from any format of phone numbers and then we compare them.


using System;
using System.Collections;
class Program
{
  static void Main()
  {
  string num = "800-555-1212";
  string num1 = "(800) 555 1212";
 
  if (FetchDigitsOnlyFromPhoneNumber(num) ==  FetchDigitsOnlyFromPhoneNumber(num1))
  {
  Console.WriteLine("Equal Numbers !");
  }
  else
  {
  Console.WriteLine("Unequal Numbers !");
  }
 
  Console.Read();
  }
  private static string FetchDigitsOnlyFromPhoneNumber(string formattedNumber)
  {
  string cleanedNumber;
  cleanedNumber = formattedNumber;
  cleanedNumber = cleanedNumber.Replace("(", string.Empty);
  cleanedNumber = cleanedNumber.Replace(")", string.Empty);
  cleanedNumber = cleanedNumber.Replace("+", string.Empty);
  cleanedNumber = cleanedNumber.Replace("-", string.Empty);
  cleanedNumber = cleanedNumber.Replace(" ", string.Empty);  //Blank
  cleanedNumber = cleanedNumber.Replace(".", string.Empty);
  return cleanedNumber;
  }
}