private void button1_Click(object sender, EventArgs e)
        {
    
            foreach (string match in Search(path, "*.exe"))
            {
                Console.WriteLine(match.);  < ------------------------- Replace
                Counter++;
            }
            Console.WriteLine("================================");
            Console.WriteLine("Done :"+Counter);
        }


 static IEnumerable<string> Search(string root, string searchPattern)
        {
        Queue<string> dirs = new Queue<string>();
        dirs.Enqueue(root);
        while (dirs.Count > 0) {
            string dir = dirs.Dequeue();

            // files
            string[] paths = null;
            try {
                paths = Directory.GetFiles(dir, searchPattern);

            } catch { } // swallow

            if (paths != null && paths.Length > 0) {
                foreach (string file in paths) {
                    yield return file;
                }
            }

            // sub-directories
            paths = null;
            try {
                paths = Directory.GetDirectories(dir);
            } catch { } // swallow

            if (paths != null && paths.Length > 0) {
                foreach (string subDir in paths) {
                    dirs.Enqueue(subDir);
                }
            }
        }
        }