User1711366110 posted
I have to upgrade a web site with AjaxControlToolKit 1.0.20229.0 and FrameWork 2.0 running on a windows 2003 server to a windows 2012 r2 server with FrameWork 4.5.2.
I need to know what are the possible problems (references, versions)
As per your case , I have been shared my ideas below :
1. First I suggest you to check
this MSDN article having the Version Compatibility in the .NET Framework 4.5
2. It is also possible that the changes from 2.0 to 4.5 might not affect your codebase at all
3.if anything, and then focusing your testing. Such an approach might actually be more effective than a page-by-page test which would inevitably miss something.
4.The page parser for ASP.NET Web pages (.aspx files) and user controls (.ascx files) is stricter in ASP.NET 4 than in earlier versions of ASP.NET, and it flags more markup
as invalid than in earlier versions
5.Examine error messages that are produced when a page runs and fix errors that result from invalid markup. Since there are markup differences you should really check
each page and control for proper rendering
6.For AjaxToolControlKit ,you can download the corresponding version from
this link
7. Or Right Click on your project folder -->references,-->Manage NuGet Packages-->you can add AjaxToolControlKit through online
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with regards,
Edwin
