3 Questions....

[JoeClark]

I have developed a web based application using .Net Framework 1.1.

All the clients for this application are IE. And the client OS is Windows
2000 Professional. I have not used any third party controls in the
application.

1.. What should be the minimum browser version that I should insist on all
the client machines?
2.. In the Internet options window(Menu -> Tools, Internet Options) I have
changed the settings to "Every visit to the page"(Check for newer versions
of stored pages). Making this setting is always a positive point?
3.. Also sometimes the Image buttons of the .ASPX are not getting
displayed on the screen. Why? It happened on only one computer.
Please advice. Thank you very much.

Joe

 

[Steve C. Orr [MVP, MCSD]]

1. IE 4.x is usually a good minimum
2. Shouldn't be necessary but couldn't hurt.
3. Try clearing the browser cache on that client computer

 

[JoeClark]

Steve,
I cleared the cache on that client computer, images started working fine.
How to make sure that it works all the time. It is hard to determine when
exactly the cache should be cleared. But setting the option 2 should always
get the latest data and should not depend upon cache. Is it correct?
I appreciate your quick response.
Joe

 

[Jeff Dillon]

Perhaps if it was set only before the first visit to the page

 

[Steve C. Orr [MVP, MCSD]]

Caching is a complex subject. There are many places that images could
potentially get cached.
One reliable way is to tack on a querystring value to the image url that has
the sole purpose of tricking these systems into thinking the image is unique
every time.
Example:
<img src="SomeImage.jpg?RandomID=432d892"/>

--
I hope this helps,
Steve C. Orr, MCSD, MVP
http://Steve.Orr.net

 

[JoeClark]

Huh, It is very complex to understand what you are saying. Steve, Can you
please elaborate.
Joe

 

[Steve C. Orr [MVP, MCSD]]

For the technique I mentioend the RandomID parameter should be generated
randomly on each page refresh. This will make the browser and other systems
think that it's a different image so they won't use any cached instances of
the image.

--
I hope this helps,
Steve C. Orr, MCSD, MVP
http://Steve.Orr.net