private void ClearDistributionLists()
        {
            DistLists.Clear();

            Folder parentFolder = ListsFolder.Parent;
            string name         = ListsFolder.Name;

            ListsFolder.Delete();

            ListsFolder = parentFolder.Folders.Add(name, OlDefaultFolders.olFolderContacts);
            ListsFolder.ShowAsOutlookAB = true;

            Properties.Settings.Default.ListsFolderPath = ListsFolder.FolderPath;
            Properties.Settings.Default.Save();
        }
        /// <summary>
        /// Deletes the custom calendar
        /// </summary>
        public void DeleteCustomCalendar()
        {
            if (_customCalendar == null)
            {
                return;
            }

            try
            {
                _customCalendar.Delete();
                _customCalendar = null;
            }
            catch (Exception ex)
            {
                MessageBox.Show("The following error occurred: " + ex.Message);
            }
        }