using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text.RegularExpressions; public class Test { public static void Main() { var text = @"ExampleProjectSystem.API.Services.ReportRepository.SearchCustomerByAdvanceFilters(TableBaseDto filter, String ReportName) in E:\SharedProjects\ExampleProjectAPI\Services\ReportRepository.cs:line 445"; var pattern = @"([^\s\\]+):line\s+(\d+)"; var result = Regex.Match(text, pattern); if (result.Success) { Console.WriteLine(result.Groups[1].Value); Console.WriteLine(result.Groups[2].Value); } } }