private async Task DeleteUserAsync()
        {
            try
            {
                await ApplicationUserService.DeleteUserAsync(ApplicationUserId);

                await ToastService.ShowToastAsync("Administrator deleted.", ToastType.Success);
                await ModalDialogClose();
            }
            catch (Exception ex)
            {
                Logger.LogError(ex.Message, ex);
                await ToastService.ShowToastAsync(ex.Message, ToastType.Error);
                await ModalDialogCancel();
            }
        }