Apache Lucene.Net 2.4.0 Class Library API

TermFreqVector.GetTermFrequencies Method 

Array of term frequencies. Locations of the array correspond one to one to the terms in the array obtained from

getTerms
method. Each location in the array contains the number of times this term occurs in the document or the document field.

int[] GetTermFrequencies();

See Also

TermFreqVector Interface | Lucene.Net.Index Namespace