How can I get MIME type from the extension of a file

Hi.. Use the Following Code to Get the MIME Type from the Win Form, using System; using System.Security; using System.Security.Permissions; using Microsoft.Win32; using System.IO; public class GetMime { public string GetMIMEType(string filepath) { RegistryPermission regPerm = new RegistryPermission(RegistryPermissionAccess.Read,"HKEY_CLASSES_ROOT"); RegistryKey classesRoot = Registry.ClassesRoot; FileInfo fi = new FileInfo(filepath); string dotExt = fi.Extension; RegistryKey typeKey = classesRoot.OpenSubKey("MIME\\Database\\Content Type"); foreach (string keyn in typeKey.GetSubKeyNames()) { RegistryKey curKey = classesRoot.OpenSubKey("MIME\\Database\\Content Type\\" + keyn); if (((curKey.GetValue("Extension")+"").ToLower()) == dotExt.ToLower()) return keyn; } return "Not Found"; } public static void Main() { GetMime obj = new GetMime(); Console.WriteLine(obj.GetMIMEType("Mani.gif")); Console.WriteLine(obj.GetMIMEType("Mani.xml")); Console.WriteLine(obj.GetMIMEType("Mani.jpg")); Console.WriteLine(obj.GetMIMEType("Mani.txt")); Console.WriteLine(obj.GetMIMEType("Mani.css")); } } -Manivannan D