using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"([\d\(][\(\)\s\.\-\d]{4,}\d)";
string input = @"whatever 0 (000) 000-0000 whatever whatever 0(000)000-0000 whatever
whatever (000) 000-0000 whatever whatever (000)000-0000 whatever
whatever 000 000-0000 whatever whatever 000.000.0000 whatever
whatever 000-42000-0000 whatever whatever 000-0000 whatever
whatever 000 - 0000 whatever whatever 000.0000 whatever
whatever 000 . 0000 whatever whatever 000 0000 whatever 1
whatever 00000000000 whatever
whatever 0000000000 whatever
whatever 000000000 whatever
whatever 00000000 whatever
whatever 0000000 whatever
whatever 000000 whatever
whatever 00 00 0000 0000 whatever 3
whatever 00 0000 000 000 whatever 3
whatever 000 0000 0000 whatever 2
whatever (000) 0000 0000 whatever
whatever 00000 000000 whatever 1
whatever 00 0000 0000 whatever 21135";
foreach (Match m in Regex.Matches(input, pattern))
{
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