Returns the number of unique terms (across all fields) in this reader. This method returns long, even though internally Lucene cannot handle more than 2^31 unique terms, for a possible future when this limitation is removed.
cannot be easily determined (eg Multi*Readers). Instead, you should call {@link #getSequentialSubReaders} and ask each sub reader for its unique term count.

Namespace: Lucene.Net.Index
Assembly: Lucene.Net (in Lucene.Net.dll) Version: 2.9.4.1

Syntax

C#
public virtual long GetUniqueTermCount()
Visual Basic
Public Overridable Function GetUniqueTermCount As Long
Visual C++
public:
virtual long long GetUniqueTermCount()

Return Value

[Missing <returns> documentation for "M:Lucene.Net.Index.IndexReader.GetUniqueTermCount"]

See Also