public static CascadingDropDownNameValue[] QuerySimpleCascadingDropDownDocument(XmlDocument document, string[] documentHierarchy, StringDictionary knownCategoryValuesDictionary, string category)
{
// Use a default Regex for input validation that excludes any user input with the characters
// '/', ''', or '*' in an effort to prevent XPath injection attacks against the web service.
// Public sites should use a more restrictive Regex that is customized for their own data.
return QuerySimpleCascadingDropDownDocument(document, documentHierarchy, knownCategoryValuesDictionary, category, new Regex("^[^/'\\*]*$"));
}