Umbraco 7.X Get Prevalues from NodeId and Property Alias

Prevalues are where you can store configuration details you may want to use in backend code, such as url for a particular service etc....

Well this is how to get the Prevalues in C#.

var node = ApplicationContext.Services.ContentService.GetById(nodeId);

var propertyTypeTextExtractor = node.PropertyTypes.First(x => x.PropertyEditorAlias == "MyAlias");

int DataTypeID = propertyTypeTextExtractor.DataTypeDefinitionId;

XPathNodeIterator preValueIterator = umbraco.library.GetPreValues(DataTypeID);