Simple SQLi tester MeltDown

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;

namespace SQLi_ToolKit
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                Console.ForegroundColor = ConsoleColor.White;
                if (args.Length == 0)
                {
                    Console.WriteLine("Usage:\nSQLi-ToolKit.exe {target url - Example: http://target.com/index.php?id=1}");
                }
                else
                {
                    string url = args[0];
                    string[] prams;
                    prams = File.ReadAllLines("payloads.txt");
                    string error = "You have an error in your SQL syntax;";
                    Console.ForegroundColor = ConsoleColor.Yellow;
                    Console.WriteLine("");
                    Console.WriteLine("");
                    Console.WriteLine(@"      _____  ____  _      _     _______          _ _  ___ _   ");
                    Console.WriteLine(@"     / ____|/ __ \| |    (_)   |__   __|        | | |/ (_) |  ");
                    Console.WriteLine(@"    | (___ | |  | | |     _ ______| | ___   ___ | | ' / _| |_ ");
                    Console.WriteLine(@"     \___ \| |  | | |    | |______| |/ _ \ / _ \| |  < | | __|");
                    Console.WriteLine(@"     ____) | |__| | |____| |      | | (_) | (_) | | . \| | |_ ");
                    Console.WriteLine(@"    |_____/ \___\_\______|_|      |_|\___/ \___/|_|_|\_\_|\__|");
                    Console.WriteLine("");
                    Console.ForegroundColor = ConsoleColor.Red;
                    Console.WriteLine("                       By: Josh");
                    Console.WriteLine("");
                    Console.WriteLine("");
                    Console.WriteLine("");
                    Console.WriteLine("");
                    Console.ForegroundColor = ConsoleColor.White;


                    Console.WriteLine("Beginning payload tests on target url: {0}", url);
                    Console.WriteLine("");
                    Console.WriteLine("");
                    foreach (string line in prams)
                    {
                        HttpWebRequest r = (HttpWebRequest)WebRequest.Create(url + line);
                        r.Method = "POST";
                        StreamReader contents = new StreamReader(r.GetResponse().GetResponseStream());
                        string response = contents.ReadToEnd();
                        if (response.Contains(error))
                        {
                            Console.ForegroundColor = ConsoleColor.Green;

                            Console.WriteLine("Payload success: {0}", line);
                        }
                        else
                        if (!response.Contains(error))
                        {
                            Console.ForegroundColor = ConsoleColor.Red;
                            Console.WriteLine("Payload failed: {0}", line);
                        }
                        Console.ForegroundColor = ConsoleColor.White;
                    }

                }
            }

            catch
            {

            }



            }
        }
    }