The following Razor function is used to fetch the Data Type Items in Umbraco.

Namespaces Required:
using System.Xml.XPath;
using umbraco.MacroEngines;

1. @functions{
2.     public List<string> FetchDataTypeItems(int DataTypeNodeID)
3.     {
4.         XPathNodeIterator preValueRootElementIterator = umbraco.library.GetPreValues(DataTypeNodeID);
5.         preValueRootElementIterator.MoveNext();
6.         XPathNodeIterator preValueIterator = preValueRootElementIterator.Current.SelectChildren("preValue", "");
7.         List<string> DataTypeListItems = new List<string>();
8.         while (preValueIterator.MoveNext())
9.         {
10.             DataTypeListItems.Add(preValueIterator.Current.Value);
11.         }
12.         string[] CommonTerms = DataTypeListItems.ToArray();
13.         return DataTypeListItems;
14.     }
15. }