Adds file extension association to windows.

FileAssociation.cs

static void CreateFileAssociations()
{
  /***********************************/
  /**** Key1: Create ".cy" entry ****/
  /***********************************/
  Microsoft.Win32.RegistryKey key1 = Microsoft.Win32.Registry.CurrentUser.OpenSubKey("Software", true);

  key1.CreateSubKey("Classes");
  key1 = key1.OpenSubKey("Classes", true);

  key1.CreateSubKey(".cy");
  key1 = key1.OpenSubKey(".cy", true);
  key1.SetValue("", "NAME"); // Set default key value

  key1.Close();

  /*******************************************************/
  /**** Key2: Create "DemoKeyValue\DefaultIcon" entry ****/
  /*******************************************************/
  Microsoft.Win32.RegistryKey key2 = Microsoft.Win32.Registry.CurrentUser.OpenSubKey("Software", true);

  key2.CreateSubKey("Classes");
  key2 = key2.OpenSubKey("Classes", true);

  key2.CreateSubKey("CryptoScript");
  key2 = key2.OpenSubKey("CryptoScript", true);

  key2.CreateSubKey("DefaultIcon");
  key2 = key2.OpenSubKey("DefaultIcon", true);
  key2.SetValue("", "\"" + @"Path\to\icon.ico" + "\""); // Set default key value

  key2.Close();

  /**************************************************************/
  /**** Key3: Create "DemoKeyValue\shell\open\command" entry ****/
  /**************************************************************/
  Microsoft.Win32.RegistryKey key3 = Microsoft.Win32.Registry.CurrentUser.OpenSubKey("Software", true);

  key3.CreateSubKey("Classes");
  key3 = key3.OpenSubKey("Classes", true);

  key3.CreateSubKey("CryptoScript");
  key3 = key3.OpenSubKey("CryptoScript", true);

  key3.CreateSubKey("shell");
  key3 = key3.OpenSubKey("shell", true);

  key3.CreateSubKey("open");
  key3 = key3.OpenSubKey("open", true);

  key3.CreateSubKey("command");
  key3 = key3.OpenSubKey("command", true);
  key3.SetValue("", "\"" + @"\Path\to\file.exe" + "\"" + " \"%1\""); // Set default key value

  key3.Close();
}