I've seen a number of design cases in a web page where a user is required to type at least 3-5 characters in the search field before a list of results is produced. Typically this is when there are a lot of rows and it makes no sense to search for just "A" or load all records initially with no search string.
Has anyone implemented server-side functionality with a minimum search string length? Doesn't appear to already be an option for this.