IIS .NET Framework，ASP.NET版本不匹配

Question

I have a .NET 4.0 web application which uses an asp gridview control to display data. The control will automatically sort data when a column header is clicked. I have this application running and sorting fine on both a dev and test server. However, on the prod server, it does not sort correctly. No error is thrown, it just does not act correctly. Since the code is identical I believe this has to be an environment issue.

When trying to troubleshoot this issue, I deliberately malformed the web.config in both environments and noticed the following difference when the error page is displayed:

Dev (code works as expected):

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.34249 

Prod (code does not work as expected):

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.6.81.0 

Could this be the cause of the issue? What exactly does this signify? Trying to find this answer on my own has proved fruitless. Any help is appreciated. Thanks!

Answer 1

This issue is caused by ASP.NET Version:4.6.81.0. When updating the dev server to match this version, the gridview does not sort correctly. I'm uncertain as to whether or not this is a bug in ASP.NET or a fix for a bug which was exploited by the code. Regardless, the original issue was caused by difference in ASP.NET versions.