Hi All,

I want to create WebHttpApplication which inherits from DotNetNuke.Web.Common.Internal.DotNetNukeHttpApplication. Because I want to turn on some Application Variables. But I don't create it. So, I need your support for my problem.

Thank you very much

Thank you,

Now, DNN is built and developed on .Net Framework 4. I try to add DLL of .Net Framework 4.5, but error.  how way to add DLL of .Net Framework 4.5 to DNN core

dnn is compiled against the asp.net 4.0 framework - and is forward compatible with 4.5.

Just recompiling the dll against the later framework would not get you very far.

You would need to first completely update the web.config for all asp.net elements including the compiler i would suspect.
Also you would need to deal with any breaking platform issues - when MS creates a new framework it keeps compatibility
by forcing each application to reference the correct versions of itself - this means when you run an asp.net 4.0 application on a server
with asp.net 4.5.1 installed - it still RUNS the application in asp.net 4.0 mode.

Trying to switch an application forward to a new version without fully understanding any breaking changes in libraries and the runtime is asking for trouble.
A large part of DNN is compile at runtime - any number of issues could occur if the runtime elements dont all match up in terms of versioning

But really - I cant reinforce strongly enough how BAD an idea it is to alter the DNN core
- you will wind up with a site that is not compatible with future versions
- and possibly break compatibility with 3rd party modules and even core forge modules.

Westa