Getting SharePoint crawl history

Question

I have an application that uses the Microsoft.Office.Server.Search.Administration.CrawlHistory class to read crawl history information once a day and save it to a database where we can generate reports and statistics. For some reason, though, this class will not return data for crawls that started on the current date; it will only return data for crawls that started on an earlier data. Can anyone explain how to get this class to return data for all crawls that have run?

Answer 1

1. Use .NET Reflector to see the source code of the CrawlHistory class (additionally, you may want to use the FileGenerator add-in).
2. Check the dbo.proc_MSS_GetCrawlHistory stored procedure from the SharedServicesInstanceName_Search_DB database (all GetCrawlHistory overloads use it internally).