Index was out of range. Must be non-negative and less than the size of the collection.Filtering in ListBox

there are many titles about my problem but i could not find any solution.

I am taking a collection from web service and i am filtering it with double click in ListBox.

SharedData.cs

public class SharedData
{
    private List<OsbDownloadItem> _allItems;
    public List<OsbDownloadItem> AllItems
    {
        get
        {
            if (null == _allItems)
                _allItems = new List<OsbDownloadItem>();

            return _allItems;
        }

        set
        {
            _allItems = value;
        }
    }

    /// <summary>
    /// Returns a list of distinct sob values in AllItems.
    /// </summary>
    /// <returns></returns>
    public List<string> GetDistinctSOBS()
    {
        List<string> distinctSobNames = new List<string>();

        for (int i = 0; i < _allItems.Count; i++)
        {
            string sob = _allItems[i].SOB;

            if (distinctSobNames.Contains(sob)) 
            {
                continue;
            }

            distinctSobNames.Add(sob);
        }

        return distinctSobNames;
    }

    /// <summary>
    /// Returns distinct streets under a sob.
    /// </summary>
    /// <param name="sob"></param>
    /// <returns></returns>
    public List<string> GetDistinctStreetsBySOB(string sob)
    {
        List<string> streets = new List<string>();

        for (int i = 0; i < _allItems.Count; i++)
        {
            OsbDownloadItem currentOsbItem = _allItems[i];

            if (currentOsbItem.SOB != sob)
                continue;

            if (streets.Contains(currentOsbItem.Street))
                continue;

            streets.Add(currentOsbItem.Street);
        }

        return streets;


        /*List<OsbDownloadItem> itemsTemp = SharedData.Instance.AllItems.Where(i => i.SOB.Equals(sob)).ToList();

        List<string> sobs = itemsTemp.Select(i => i.SOB).ToList();

        return sobs;*/
    }

    /// <summary>
    /// Returns distinct connectionarticles under a street.
    /// </summary>
    /// <param name="street"></param>
    /// <returns></returns>
    public List<string> GetDistinctConnectionArticlesBySTREET(string street)
    {
         List<string> connectionArticles = new List<string>();

        for (int i = 0; i < _allItems.Count; i++)
        {
            OsbDownloadItem currentOsbItem = _allItems[i];

            if (currentOsbItem.Street != street)
                continue;

            if (connectionArticles.Contains(currentOsbItem.ConnectionArticle))
                continue;

            connectionArticles.Add(currentOsbItem.ConnectionArticle);
        }

            return connectionArticles;
    }

    /// <summary>
    /// Returns distinct installition under a street.
    /// </summary>
    /// <param name="connection_article"></param>
    /// <returns></returns>
    public List<string> GetDistinctInstallitionsByCONNECTIONARTICLE(string connection_article)
    {
        List<string> installitions = new List<string>();

        for (int i = 0; i < _allItems.Count; i++)
        {
            OsbDownloadItem currentOsbItem = _allItems[i];

            if (currentOsbItem.ConnectionArticle != connection_article)
                continue;

            if(installitions.Contains(currentOsbItem.Installation))
                continue;

            installitions.Add(currentOsbItem.Installation);
        }

        return installitions;
    }

    public Level CurrentLevel { get; set; }

    private SharedData()
    {
    }

    private static SharedData _instance;
    public static SharedData Instance
    {
        get
        {
            if (null == _instance)
                _instance = new SharedData();

            return _instance;
        }
    }
}

Form1.cs

private void button1_Click(object sender, EventArgs e)
{
    DateTime date = datePicker.Value;
    bool includeCompleted = false;
    string username = usernameTextBox.Text;
    string password = passwordTextBox.Text;
    string serialNumber = serialNumberTextBox.Text;


    AuthHeader hdr = new AuthHeader();
    hdr.UserName = username;
    hdr.Password = password;
    hdr.SerialNumber = serialNumber;

    OSBService.MobileService service = new WindowsFormsApplication1.OSBService.MobileService();

    service.AuthHeaderValue = hdr;

    WebMethodResult result = service.GetOsbItems(date, includeCompleted);

    if (result.HasErrors)
    {
        MessageBox.Show(result.Messages.ToString());
        return;
    }

    SharedData.Instance.AllItems = ((OsbDownloadItem[])result.ReturnValue).ToList();

    itemsListBox.DataSource = SharedData.Instance.GetDistinctSOBS();

    SharedData.Instance.CurrentLevel = Level.SOB;
}

private void itemsListBox_MouseDoubleClick(object sender, MouseEventArgs e)
{
    if (SharedData.Instance.CurrentLevel == Level.SOB)
    {
        string value = "";

        int index = this.itemsListBox.IndexFromPoint(e.Location);

        if (index != System.Windows.Forms.ListBox.NoMatches)
        {
            value = SharedData.Instance.AllItems[index].ToString();
        }

        string sob = SharedData.Instance.GetDistinctSOBS()[index];

        itemsListBox.DataSource = SharedData.Instance.GetDistinctStreetsBySOB(sob);

        SharedData.Instance.CurrentLevel = Level.STREET;
    }

    else if (SharedData.Instance.CurrentLevel == Level.STREET)
    {
        string value = "";

        int index = this.itemsListBox.IndexFromPoint(e.Location);

        if (index != System.Windows.Forms.ListBox.NoMatches)
        {
            value = SharedData.Instance.AllItems[index].ToString();
        }

        string sob = SharedData.Instance.GetDistinctSOBS()[index];

        string street = SharedData.Instance.GetDistinctStreetsBySOB(sob)[index];

        itemsListBox.DataSource = SharedData.Instance.GetDistinctConnectionArticlesBySTREET(street);

        SharedData.Instance.CurrentLevel = Level.CONNECTION_ARTICLE;
    }

    else if (SharedData.Instance.CurrentLevel == Level.CONNECTION_ARTICLE)
    {
        string value = "";

        int index = this.itemsListBox.IndexFromPoint(e.Location);

        if (index != System.Windows.Forms.ListBox.NoMatches)
        {
            value = SharedData.Instance.AllItems[index].ToString();
        }

        string sob = SharedData.Instance.GetDistinctSOBS()[index];

        string street = SharedData.Instance.GetDistinctStreetsBySOB(sob)[index];

        string connection_article = SharedData.Instance.GetDistinctConnectionArticlesBySTREET(street)[index];

        itemsListBox.DataSource = SharedData.Instance.GetDistinctInstallitionsByCONNECTIONARTICLE(connection_article);

        SharedData.Instance.CurrentLevel = Level.INSTALLATION;

    }

    else if (SharedData.Instance.CurrentLevel == Level.INSTALLATION)
    {
        // TODO:  
    }

    else
    { 
        //TODO:
    }
}

When i click first indexies in listbox, it works but when i click first index and after filtering when i click second or third index i am getting this error"Index was out of range. Must be non-negative and less than the size of the collection".