using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?:^|(?<=[^\d]))\d{9}(?:!|(?=[^\d])|$)";
string input = @"123741852
blabla n123456789 bla bla 78 texto...
987654321! texto qualquer 12 blaa
123 bla blum 123741852 bobobl
blablum 12345678901 papumpa...
dsafasdfa123741852!wef fdsafafsdqwefqwewq 123741852";
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