This article applies to version 3 only. From v2010 onwards, document filenames are indexed for searching by default.

In order to make the indexer include document file names in the index, and therefore make them searchable, we can easily write a simple plug-in. 

For an overview and indepth detail on how plug-ins work, please see

http://keyoti.com/products/search/dotNetWeb/Help2010/UserGuide/Central%20Event%20System%20-%20Plug-ins/Introduction.htm

Step 1. Download the attached VB.NET plug-in project (see bottom of this page).

Step 2. Build the project, ensuring that it is referencing your version of the search DLLs properly.

Step 3. To use the plug-in, you specify the "EventHandlerAssembly" property in the configuration.  Eg. open the index manager tool, specify the index directory to work with, click configuration and in "EventHandlerAssembly" set a path like

C:\Documents and Settings\\Desktop\FilenameIndexingPlugin\FilenameIndexingPlugin\bin\Debug\FilenameIndexingPlugin.dll

Step 4. Also under configuration, make sure that "Logging" is checked, and then check "IgnoreLastModifiedDate" and uncheck "UseFileSizeToIdentifyChange".  The last two settings force the indexer to reindex any already indexed files.

Step 5. Build the index and try searching.

Troubleshooting

If it doesn't work, then open the index directory and look at the logs;