Spell-checking.md

Spell checking

You'll need to install the SpellCheckComponent in the standard request handler in order to use this.

Next, a spellcheck dictionary must be provided. Normally a default dictionary is created by invoking BuildSpellCheckDictionary() at commit/optimize time (you can also configure Solr to automatically rebuild spellchecking indices):

ISolrOperations<Product> solr = ...
solr.BuildSpellCheckDictionary();

Now you can start issuing spellchecking queries by defining the SpellCheck parameter in the QueryOptions:

ISolrOperations<Product> solr = ...
var results = solr.Query("ipo appl", new QueryOptions {
  SpellCheck = new SpellCheckingParameters {Collate = true}
});

Then you get the suggestions from results.SpellChecking, i.e.:

foreach (var sc in results.SpellChecking) {
    Console.WriteLine("Query: {0}", sc.Query);
    foreach (var s in sc.Suggestions) {
        Console.WriteLine("Suggestion: {0}", s);                    
    }
}

which would print something like:

Query: ipo
Suggestion: ipod
Query: appl
Suggestion: apple

All of the SpellCheckComponent parameters are supported, except for the extendedResults option.