CarsService.GetDropDownContents C# (CSharp) Method

    public AjaxControlToolkit.CascadingDropDownNameValue[] GetDropDownContents(string knownCategoryValues, string category)
    {
        var knownCategoryValuesDictionary = CascadingDropDown.ParseKnownCategoryValuesString(knownCategoryValues);
        return CascadingDropDown.QuerySimpleCascadingDropDownDocument(Document, Hierarchy, knownCategoryValuesDictionary, category, InputValidationRegex);
    }