using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(?<code>\+?\d{1,3})[-\s]{0,}(?<number>\(?\d{3}\)?[-\s]{0,}\d{3}[-\s]{0,}\d{2}[-\s]{0,}\d{2})$";
string input = @"+447700150563
+14247323156
+12048170348
+33644628265
+78005553535
88005553535
8-800-555-35-35
8 800 555 35 35
8(800)5553535
8-(800)5553535
8-(800) 555 3535
8 (800) 555 3535";
RegexOptions options = RegexOptions.Multiline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx