Lucene.Net 1.9.1 Class Library

QueryParser.SetLowercaseWildcardTerms Method 

Whether terms of wildcard, prefix, fuzzy and range queries are to be automatically lower-cased or not. Default is

true
.

public virtual void SetLowercaseWildcardTerms(
   bool lowercaseExpandedTerms
);

See Also

QueryParser Class | Lucene.Net.QueryParsers Namespace