“ASP.global_asax does not exist in the namespace ASP”

Question

I created a RazorFunctions.cshtml file on App_Code

@functions {
    public static string GetActiveClassIf(string controllerName, string actionName = null)
           


        

Answer 1

I installed Microsoft.CodeDom.Providers.DotNetCompilerPlatform for my web project and then removed the package. The error went away.

Answer 2

JUST RIGHT CLICK ON YOUR SOLUTION PROJECT AND CLICK ON CLEAN. I HAVE DONE THAT AND IT DID WORK FOR ME. I AM SHARING THIS BECAUSE WHO KNOWS IF IT HELPS SOMEONE ELSE LIKE IT HELPS ME.

Answer 3

After trying a variety of the solutions proposed here, it turns out that simply quitting Visual Studio 2015 and then restarting it was enough to get the Solution/Project to successfully compile once again.

Answer 4

Two things i did to resolve this was to re-target the framework and then changing it back (was using 4.5.1 changed it to 4.5 and back)

After this i had a lot of error with T4MVC which i was also using, i upgraded it to newest version but i could see that in source control that T4MVC was installed targeting framework 4.5 and when you re/install a new nuget package it changes the target framework, so that was changed to 4.5.1

After this everything worked. I didn't test if you only need to do that second part of this answer, but i would try that first.

Answer 5

I've found that if I have the files in App_Code open in Visual Studio 2015 when I run the build, then I don't get the errors. As soon as I close the files the errors show up again.

Answer 6

I had the same issue.

I manually edited the generated file file.cshtml.72cecc2a.cs (it was at AppData\Local\Temp\Temporary ASP.NET Files\root) and changed ASP.global_asax to System.Web.HttpApplication and the error went away.

This is the generated code:

protected static ASP.global_asax ApplicationInstance {
    get {
        return ((ASP.global_asax)(Context.ApplicationInstance));
    }
}

I changed it to:

protected static System.Web.HttpApplication ApplicationInstance {
    get {
        return ((System.Web.HttpApplication)(Context.ApplicationInstance));
    }
}

I don't know why this is happening though.