There are two source code files shown. The ASP.NET file is
called IndexingServiceWithCSharp.aspx. It must be associated with a code behind
page called IndexingServiceWithCSharp.aspx.cs.
Note that if you want to use this sample source code to show
users a graphical representation of how relevant each search result is to their
query, you will need to create a set of images called 1bars.png to 10bars.png
inclusive, then put them in an images subfolder. Alternatively, matches may be
represented as percentages or omitted altogether.