highlightterm.cs

string indexFolder = @"D://Samples/Index";
string documentsFolder = @"D://Samples/Source/Index";
// Creating index in the specified folder
Index index = new Index(indexFolder);  
// Indexing documents from the specified folder
index.Add(documentsFolder);
// Searching in index
SearchResult result = index.Search("video");
for (int i = 0; i < result.DocumentCount; i++)
{
     if (result.DocumentCount > 0)
     {
           FoundDocument document = result.GetFoundDocument(i); // Getting the first found document
           OutputAdapter outputAdapter = new FileOutputAdapter(@"D:\Highlighted" + i + ".html"); // Creating the output adapter to a file
           HtmlHighlighter highlighter = new HtmlHighlighter(outputAdapter); // Creating the highlighter object
           index.Highlight(document, highlighter); // Generating output HTML formatted document with highlighted search results

     }
}