XHtmlOptions PageCacheClear Function. Clears the HTML page cache. ABCpdf .NET PDF Library. From ABCpdf .net previous page next page PageCacheClear Method Clears the HTML page cache. Syntax [C#]void PageCacheClear()[Visual Basic]Sub PageCacheClear() Params Name Description return n/a. Notes ABCpdf holds a cache of recently requested URLs and it's only after five minutes or so that these pages expire from the cache. This results in a considerable degree of optimization for many common operations. You can clear the cache of all pages by calling this method. Example None. previous page start next page