FileSearching

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace ReplaceText
{
    class Program
    {
        private static int lineNumber = 1;
        private static List<FileInfo> files = new List<FileInfo>();

        static void Main(string[] args)
        {
            Console.Write("Directory to search: ");
            DirectoryInfo directory = new DirectoryInfo(Console.ReadLine());

            Console.Write("Type of file to search: ");
            string typeToFind = Console.ReadLine();

            Console.Write("Text to find: ");
            string textToFind = Console.ReadLine();

            foreach (FileInfo file in directory.GetFiles(typeToFind))
            {
                PrintColourLine("Searching " + file.Name + "...", ConsoleColor.Cyan);

                using (StreamReader reader = new StreamReader(new FileStream(file.FullName, FileMode.Open)))
                {
                    foreach (string line in reader.ReadToEnd().Split("\n".ToCharArray()))
                    {
                        if (line.Contains(textToFind))
                        {
                            if (!files.Contains(file))
                                files.Add(file);

                            PrintColourLine(string.Format("Found {0} in {1} on line {2}!", textToFind, file.Name, lineNumber), ConsoleColor.Green);

                            //Console.Write(line);
                            //Console.ReadLine();

                            //return;
                        }

                        lineNumber++;
                    }

                    lineNumber = 1;
                }

                if (!files.Contains(file))
                    PrintColourLine(textToFind + " not found!", ConsoleColor.Red);

                Console.ReadLine();
            }
        }

        private static void PrintColour(string message, ConsoleColor foreColour, ConsoleColor backColour = ConsoleColor.Black)
        {
            ConsoleColor fore = Console.ForegroundColor, back = Console.BackgroundColor;

            Console.ForegroundColor = foreColour;
            Console.BackgroundColor = backColour;

            Console.Write(message);

            Console.ForegroundColor = fore;
            Console.BackgroundColor = back;
        }

        private static void PrintColourLine(string message, ConsoleColor foreColour, ConsoleColor backColour = ConsoleColor.Black)
        {
            PrintColour(message + Environment.NewLine, foreColour, backColour);
        }
    }
}