Force browser to clear cache

Question

Is there a way I can put some code on my page so when someone visits a site, it clears the browser cache, so they can view the changes?

Languages used: ASP.NET, VB.N

Answer 1

Not as such. One method is to send the appropriate headers when delivering content to force the browser to reload:

Making sure a web page is not cached, across all browsers.

If your search for "cache header" or something similar here on SO, you'll find ASP.NET specific examples.

Another, less clean but sometimes only way if you can't control the headers on server side, is adding a random GET parameter to the resource that is being called:

myimage.gif?random=1923849839