Solved

VirtualPathProvider Cache Problem

Posted on 2008-06-22
3
1,423 Views
Last Modified: 2013-11-07
I implemented a VirtualPathProvider that delivers content from a DB.  Everything works fine except that the pages are cached indefinately.  Any changes to the content won't be reflected on the next call to the same page.  I have to in fact clear out the Asp.Net Temp folder in order to get the new content. How do I get VirtualPathProvider to always deliver up-to-date content.  I've even tried overriding the GetCacheDependency to always return Nothing and still no luck. I am using Vista as a development machine.
0
Comment
Question by:Webtologist
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 1

Accepted Solution

by:
jbeallva earned 500 total points
ID: 22000709
By trial and error, I've observed the following things must be true in order to get content fetched from a VirtualPathProvider to be "fresh".

1) GetCacheDependency must return null (Nothing in VB.NET)
2) GetFileHash must return a different value than the last hash for the file in question

This isn't a complete picture.  I don't totally understand how ASP.NET handles all the caching dependencies and why it requests file hashes for some files but not others (it seems to *never* request the hashes for your code files, only aspx and .master files, and I assume .ascx files as well).  Hopefully this will help some.  I'll post more information if I make further discoveries.
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In my previous two articles we discussed Binary Serialization (http://www.experts-exchange.com/A_4362.html) and XML Serialization (http://www.experts-exchange.com/A_4425.html). In this article we will try to know more about SOAP (Simple Object Acces…
International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
In this video, viewers are given an introduction to using the Windows 10 Snipping Tool, how to quickly locate it when it's needed and also how make it always available with a single click of a mouse button, by pinning it to the Desktop Task Bar. Int…
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…

627 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question