IsolatedStorageSettings.ApplicationSettings.Remove（＆＃34; userClient＆＃34;）删除所有对象

Question

在IsolatedStorageSettings.ApplicationSettings中我有5个字符串，在注销后我只想删除＆＃34; userClient＆＃34;，但它会清除所有字符串。

private static void ClearAllAndGoToSignIn()
    {
        App.MainViewModel.UserDetails = new UserItem();
        App.MainViewModel.ReceiversList.Clear();
        App.MainViewModel.TimelineList.Clear();
        if (IsolatedStorageSettings.ApplicationSettings.Contains("userClient"))
        { IsolatedStorageSettings.ApplicationSettings.Remove("userClient"); }
        IsolatedStorageSettings.ApplicationSettings.Save();
        Storage.ClearStorage();

        Application.Current.Terminate();

    }