using System;
using System.IO;

public class FileSearch {
    public static void Main() {
        String searchName = "SQL";
        DirectoryInfo myDir = new DirectoryInfo(@"c:\Program Files");
        SearchDirectories(myDir, searchName);
    }

    public static void SearchDirectories(DirectoryInfo dir, String target) {
        FileInfo[] files = dir.GetFiles();
        foreach (FileInfo file in files) {
            if (file.Name.IndexOf(target) > -1) {
                Console.WriteLine(file.Name);
            }
        }

        DirectoryInfo[] dirs = dir.GetDirectories();
        foreach (DirectoryInfo subDir in dirs) {
            SearchDirectories(subDir, target);
        }
    }
}