C # Registry Programming Example two: Add your own file type in new

The following example adds your own file type in the right-click shortcut menu on the desktop or in new in Windows Explorer. Suppose you add a file with the extension ". cs", the file is "CS files," and the default file opens with WordPad notepad.exe in Windows.

Program Listing 18-2:

Using System;
Using Microsoft.Win32;
Class Regtest
{public
 static void Main ()
 {
  RegistryKey key1=registry.classesroot.createsubkey (". CS ");
  Key1. SetValue ("", "CS");
  RegistryKey Key2=key1. CreateSubKey ("Shellnew");
  Key2. SetValue ("Nullfile", "");
  Key1. Close ();
  Key2. Close ();
  Key1=registry.classesroot.createsubkey ("CS");
  Key1. SetValue ("", "CSharp file");
  Key2. SetValue ("", "c:\\windows\\notepad.exe,1");
  Key2. Close ();
  Key2=key1. CreateSubKey ("Shell\\open\\command");
  Key2. SetValue ("", "C:\\windows\\notepad.exe");
  }