Here’s simple code snippet demonstrating how to validate a UK Telephone number (both Mobile and landline number) using regular expression in C#.
Regular Expression and UK Telephone Number Validation in C#
C#
x
14
1
Regex regValidUKNumber = new Regex(@"^\s*(([+]\s?\d[-\s]?\d|0)?\s?\d([-\s]?\d){9}|[(]\s?\d([-\s]?\d)+\s*[)]([-\s]?\d)+)\s*$");2
string[] inputData = new3
string[]4
{ "0116 1111111"5
, "07777777777"6
, "7777777777"7
, "+44 7777777777"8
, "(0800) 111 111"9
};10
foreach (string telephoneNumber in inputData)11
{12
Console.WriteLine("match({0}) = {1}", telephoneNumber, regValidUKNumber.Match(telephoneNumber).Success);13
}14
Console.ReadLine();
