CODEWITHSUNDEEP
c#regex
Jakir Hossain
Jakir Hossain

Reputation: 431

How can I validate mobile number using Regex in C#

Recently I'm working in a project, in which I need validate some mobile numbers according to mobile operator's codes. Here some examples:

01100000000
01500000000
01700000000
01800000000
01900000000

Now I want to validate, first 3 digits must be in (011,015,017,018,019) and next 8 characters must be digit and if user enter something like 0120000000 then the match will be false, cause valid operator code should be in (011,015,017,018,019).

Upvotes: 0

Views: 4358

Answers (4)

Omid Nasri
Omid Nasri

Reputation: 179

You can use the following mobile number pattern:

Sample:

Regex.IsMatch("989373286128", @"^((((\+989)|(00989))|(09)|(989))(10|11|12|13|14|15|16|17|18|19|20|21|30|31|32|33|34|35|36|37|38|39|90))(\d{7})$")

Test:

+989103286128   -> Success
00989103286128  -> Success
989103286128    -> Success
+989773286128   -> Fail
009891032861282 -> Fail

GitHub:

ValidateMobileNumber

I hope this help you.

Upvotes: 0

Avinash Raj
Avinash Raj

Reputation: 174696

Don't forget to add anchors in the regex while doing validations.

@"^(011|015|017|018|019)\d{8}$"

Reduced one,

@"^(01[15789])\d{8}$"

^ Asserts that we are at the start and $ asserts that we are at the end. \d{8} matches exactly 8 digits.

DEMO

Upvotes: 9

juharr
juharr

Reputation: 32266

Here's how you can do it without using regular expressions

string[] operatorCodes = new[] {"011", "015", "017", "018", "019"};

string number = "01100000000";

if (number.Length == 11 
    && number.All(char.IsDigit)
    && operatorCodes.Any(number.StartsWith))
{
    // Valid mobile number.
}

Upvotes: 1

David
David

Reputation: 10708

you can group symbols in a regex with (), and use | for "or", thus

(011|015|017|018|019)[0-9]{8}

Upvotes: 0

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