using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(\d+)$";
string input = @"http://....rech_cod_cat=1&rech_cod_rub=&rech_cod_typ=&rech_cod_sou_typ=&rech_cod_pay=TN&rech_cod_reg=&rech_cod_vil=&rech_cod_loc=&rech_prix_min=&rech_prix_max=&rech_surf_min=&rech_surf_max=&rech_age=&rech_photo=&rech_typ_cli=&rech_order_by=31&rech_page_num=829";
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