Search in Files across Folders by Regex using C#

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• Search in Documents by RegEx using C#

SearchByRegex.cs

// Search by RegEx in multiple files across multiple folders using C#

// Creating an index folder and add document's folder to it
Index index = new Index("indexing-folder-path");
index.Add("path/parent-folder");

// Prepare the Regex Query and Search
// Regex here is to identify all words having any consecutive repeated characters.
string query = "^(.)\\1{1,}"; 
SearchResult result = index.Search(query);

SearchByRegexOutput.cs

// Highlighting and Printing Regex Search Results for all the documents
for (int i = 0; i < result.DocumentCount; i++)
{
    FoundDocument document = result.GetFoundDocument(i);

    OutputAdapter outputAdapter = new FileOutputAdapter(OutputFormat.Html, indexFolder + "/Highlight" + i + ".html");
    Highlighter highlighter = new DocumentHighlighter(outputAdapter); 
    index.Highlight(document, highlighter);

    Console.WriteLine("\tDocument: " + document.DocumentInfo.FilePath);
    Console.WriteLine("\tOccurrences: " + document.OccurrenceCount);
    for (int j = 0; j < document.FoundFields.Length; j++)
    {
        FoundDocumentField field = document.FoundFields[j];
        Console.WriteLine("\t\tField: " + field.FieldName);
        Console.WriteLine("\t\tOccurrences: " + document.OccurrenceCount);
        // Printing found terms
        if (field.Terms != null)
        {
            for (int k = 0; k < field.Terms.Length; k++)
            {
                Console.WriteLine("\t\t\t" + field.Terms[k].PadRight(20) + field.TermsOccurrences[k]);
            }
        }
    }
    Console.WriteLine("===========================================");
}