Custom Web Part + Back Button = Cannot Find Server

Hello,

I've written a Custom Web Part in .NET 1.1 for Sharepoint 2003. The Webpart works well apart from one issue which I can't get my head around:

If I make a change to the Webpart that requires a postback (ie. click a button) and then navigate away from the page (for example, to another Sharepoint area). When I try to return to the page with the back button Internet Explorer throws the error:

The page cannot be displayed ....
Cannot find server or DNS Error
Internet Explorer

I'm crap with my error codes, is this 404? Well either way it's a common, primative error page. If I use the back button without making any changes to the Webpart then I can use the back button without any ugly errors. Since this appears to be a server error and not an ASP error I'm not really sure how to go about debugging this? Has anyone seen anything like it before? I would guess that it's something going on with the Viewstate but not being an expert I don't really know.

The web part is nothing complex. It makes a few calls to a SQL database and has a few interchangeable controls (all created at OnInit & registered but only some rendered) that could be tripping it up. The only slightly unusual element is that I'm using a Javascript TreeView class to provide GUI functionality. This tree is created from a script block that is generated by .net on runtime. I wouldn't imagine that this would cause the above error but maybe?

Any light you could shed on this would be much appreciated!!

Cheers,

Olly

Re: Custom Web Part + Back Button = Cannot Find Server

Not really fixed this, I think it was a problem with the ASP pages expiring on the server. It's all a bit over my head so I'm afraid you will have to look elsewhere for a solution. I think SharePoint does handle this error in a friendly way but at the time I have Custom Errors off so was getting a big ugly error page.

Cheers,

Custom Web Part + Back Button = Cannot Find Server

Custom Web Part + Back Button = Cannot Find Server

Cannot find server or DNS Error Internet Explorer

Re: Custom Web Part + Back Button = Cannot Find Server

Cannot find server or DNS Error
Internet Explorer