How to validate multiple phone number using regular expression

Question

I have a scenario, where i have to validate multiple phone numbers at a time. For example i will input phone number like this in the grid.

+46703897733;+46733457773;+46703443832;+42708513544;+91703213815;+919054400407.

Any one help me please?

Thanks in advance.

http://stackoverflow.com/questions/123559/a-comprehensive-regex-for-phone-number-validation — Rakesh, Jul 16 '13 at 06:54
Please post you code so far. Question must show an attempt at solving the problem. — elclanrs, Jul 16 '13 at 06:56
In ASP.net, use inbuilt RegularExpressionValidator, you will find many frequently used validations written for you by MS. — RahulD, Jul 29 '13 at 21:04

score 1 · Accepted Answer · answered Jul 16 '13 at 07:09

1

use below code for +46... numbers. other number is simlar

 string regexPattern = @"^+46[0-9]{9}$";
    Regex r = new Regex(regexPattern);

    foreach(string s in numbers)
    {
        if (r.Match(s).Success)
        {
            Console.WriteLine("Match");
        }
    }

answered Jul 16 '13 at 07:09

Ramin Asadi

281
2
17

This is very much hard-coded, how do you match with this expression all the numbers supplied by the OP?For every different code (+42, +91 etc) you need to write a separate Regex with this approach. – RahulD Jul 29 '13 at 21:08
The code for this example. For all cases, you can use this code @"^+[1-9][0-9]{10}$" – Ramin Asadi Jul 31 '13 at 11:03

score 0 · Answer 2 · answered Jul 16 '13 at 06:58

Choose appropriate and suitable regular expression e.g. from here
Iterate through your number collection and validate them one by one like:
```
Regex rgx = new Regex(yourPattern, RegexOptions.IgnoreCase);
foreach(string num in numbers)
{
if(rgx.Matches(num ))
//do something you need
}
```
You also can add RegularExpressionValidator to your phone number column cells in grid and pass it your pattern. Then button click or any event that causes validation will do it for you.

score 0 · Answer 3 · answered Jul 16 '13 at 07:04

if + is mandatory in your number than do this in c#

        string[] numbers = new string[] { "+46703897733","+46733457773","46733457773"};
         string regexPattern = @"^\+(\d[\d-. ]+)?(\([\d-. ]+\))?[\d-. ]+\d$";
        Regex r = new Regex(regexPattern);

        foreach(string s in numbers)
        {
            if (r.Match(s).Success)
            {
               //"+46703897733","+46733457773" are valid in this case
                Console.WriteLine("Match");
            }
        }

if + is not mandatory you can do this

         string regexPattern = @"^\+?(\d[\d-. ]+)?(\([\d-. ]+\))?[\d-. ]+\d$";
         // all the numbers in the sample above will be considered as valid.

i have verified it. What is your input and the output you expect? — Ehsan, Jul 16 '13 at 14:01

score 0 · Answer 4 · answered Jul 16 '13 at 07:29

0

Your regular expression pattern should be then:

[+][1-9][0-9]*

and this is as of you required; If you want to limit it, like to: +911234567890, then your exp should be:

[+][1-9][0-9]{11,11}

answered Jul 16 '13 at 07:29

Vidhya Sagar Reddy

1,521
1
13
25

How to validate multiple phone number using regular expression

4 Answers4