Caching

[wtbonnell]

I am writing a Asp.Net (in C#) web app and I am looking for a way to dynamically force a complete refresh (it would be like hitting "Ctrl-F5" to refresh the browser).

 

This is basically the situation: This web app is a gallery full of thumbnails and I allow the admin to edit the file name of each thumbnail. However, if an admin types in a file name that already exists, they are prompted to either "Replace" the image already there with this one or "Rename" this image to something else.

 

If they choose "Replace" then I have the system delete the existing image/content, and then move this image to this new name. After the postback the old thumbnail still remains, HOWEVER, if I do a "Ctrl-F5" then the correct image appears.

 

It looks the images are being cached (which is good) but is there a way I can disengage this caching when a new image is replacing an old image (with the same name) OR a way to force a complete refresh?

 

 

Thanks for your help...

[kahlua001]

After the update, try appending the image source with a random querystring like src="image.gif?date=" & now() IE will load a new image becuase it has never seen this path before.

[wtbonnell]

That may be a possible work-around, but I am hoping there is a more efficient way. If not, then this is a good soltuion.

 

Thanks

[Derek Stone]

The solution kahlua001 mentioned is indeed the best method in most situations.