using System;

public class Program

{

    public static void Main()

    {

        var linesFromFile = new [] {

            @"1234 ..\Video\Products\video_product_AD00_avi.mp4 0",

            @"5678 ..\Video\Products\video_product_AD01_avi.mp4 1",

            @"9012 ..\Video\Products\video_product_AD02_avi.mp4 2"

        };

        var fileName = "VIDEO_PRODUCT_AD01_AVI.mp4";

        foreach(var line in linesFromFile)

        {

            var lineParts = line.Split(' ');

            if(lineParts[1].EndsWith(fileName, StringComparison.CurrentCultureIgnoreCase))

            {

                Console.WriteLine("Found it: " + lineParts[1] + " (" + lineParts[0] + ")" );

            }

        }

    }

}