/// <summary>
        /// Adds single <see cref="ProgramVerb"/> that define the verb supported by this ProgID.
        /// </summary>
        /// <param name="verb">Single <see cref="ProgramVerb"/> that contains supported verb.</param>
        protected void AddVerbInternal(ProgramVerb verb)
        {
            RegistryKey root = Registry.ClassesRoot;

            RegistryKey key = root.OpenSubKey(this.progId).OpenSubKey("shell", true);

            if (key == null)
            {
                key = root.OpenSubKey(this.progId, true).CreateSubKey("shell");
            }

            RegistryKey tmpkey = key.OpenSubKey(verb.Name, true);

            if (tmpkey == null)
            {
                tmpkey = key.CreateSubKey(verb.Name);
            }
            key = tmpkey;

            tmpkey = key.OpenSubKey("command", true);
            if (tmpkey == null)
            {
                tmpkey = key.CreateSubKey("command");
            }

            tmpkey.SetValue(string.Empty, verb.Command, RegistryValueKind.ExpandString);

            tmpkey.Close();
            key.Close();
            root.Close();

            ShellNotification.NotifyOfChange();
        }
        /// <summary>
        /// Removes single <see cref="ProgramVerb"/> that define the verb supported by this ProgID.
        /// </summary>
        /// <param name="verb">Single <see cref="ProgramVerb"/> that contains supported verb.</param>
        public void RemoveVerb(ProgramVerb verb)
        {
            if (verb == null)
            {
                throw new NullReferenceException();
            }

            RemoveVerb(verb.Name);
        }
 /// <summary>
 /// Adds single <see cref="ProgramVerb"/> that define the verb supported by this ProgID.
 /// </summary>
 /// <param name="verb">Single <see cref="ProgramVerb"/> that contains supported verb.</param>
 public void AddVerb(ProgramVerb verb)
 {
     AddVerbInternal(verb);
 }
 /// <summary>
 /// Creates actual Programmatic Identifier key in registry that is used by other extensions.
 /// </summary>
 /// <param name="description">Friendly description of file type.</param>
 /// <param name="editFlags"><see cref="EditFlags"/> for program file type.</param>
 /// <param name="verb">Single <see cref="ProgramVerb"/> that contains supported verbs.</param>
 /// <returns><see cref="ProgramAssociationInfo"/> instance referring to specified extension.</returns>
 public ProgramAssociationInfo Create(string description, EditFlags editFlags, ProgramVerb verb)
 {
     return(Create(description, editFlags, new ProgramVerb[] { verb }));
 }
 /// <summary>
 /// Creates actual Programmatic Identifier key in registry that is used by other extensions.
 /// </summary>
 /// <param name="verb">Single <see cref="ProgramVerb"/> that contains supported verb.</param>
 /// <returns><see cref="ProgramAssociationInfo"/> instance referring to specified extension.</returns>
 public ProgramAssociationInfo Create(ProgramVerb verb)
 {
     return(Create(string.Empty, EditFlags.None, new ProgramVerb[] { verb }));
 }