My ASP.NET Web Application cannot 'find' any of my classes in the App_Code folder ..?

Question

I'm trying to make a new asp.net web application .. so I'm copying my files from one site to the new one, in the same solution.

Now, any of my classes in the App_Code directory ... they are not getting 'picked up' by the rest of my project.

For example...

\_
\_App_Code
  |_ BaseMasterPage.cs  (please don't ask why this is in here..)
  |_ Utility.cs
  |_ FooBar.cs
\_MasterPages
  |_ Default.master.cs

// This file errors ;(
namespace Foo.WebSite.MasterPages
{
    public partial class Default_master : App_Code.BaseMasterPage
    { ... }
}

namespace Foo.WebSite.App_Code
{
    public class BaseMasterPage : MasterPage
    { .. }
}

It cannot find the App_Code.BaseMasterPage (compilation and intellisence error) in the Default.master.cs page.

I'm wondering if there's something i need to check in a web.config file? or in the .prj file or something?

Can someone please help? this is killing me :(

Update

I've been constantly trying more and more things here. I had a look at the compiler options (in the OUTPUT window) .. and noticed the /target flag, on the compiler call...

eg...
/target:library App_GlobalResources\GlobalResources.designer.cs
    App_GlobalResources\GlobalResources.en-au.designer.cs
    App_GlobalResources\GlobalResources.it.designer.cs

etc...

it's missing ALL of my .cs files from the App_Code folder, except two, which I can confirm show up in the intellisence and compile fine, when called/consumed.

WTF? it's like the .. project .. doesn't know about the other .cs files, even though they have been included into the project (and are not grey'd out, etc).

What the?!

Please, can anyone help ? :~(

m0r6aN · Accepted Answer · 2013-04-16 21:32:08Z

15

In the solution explorer, right click on the class.cs file, view it's properties and set the build action to 'compile' instead of 'content'

answered Apr 16, 2013 at 21:32

m0r6aN

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1 Comment

Josh Harris Over a year ago

This worked for me too, this is certainly the answer (or a very commonly accepted answer) to the problem described.

Arthis · Accepted Answer · 2010-03-30 07:57:58Z

8

Several guesses :

try replacing the namespace

   namespace Foo.WebSite.MasterPages 
     {
       public partial class Default_master :
   Foo.WebSite.App_Code.BaseMasterPage
       { ... } 
      }

or/and Have a look at the properties of the file in VS, make sure they are not embedded ressource or something of the kind.

last thing have a look at the default namespace in your application

answered Mar 30, 2010 at 7:57

Arthis

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2 Comments

Pure.Krome Over a year ago

Hi, thanks for the answer. I've given that a go and still no luck :( ... BUT ... I then checked if they were Embedded Resources .. which they were not. They were ALL Content (which is bad!!) You did it! Except the two classes that were compiling (which were set to Compile), I then quickly updated all the files to COMPILE and viola .. we are building again. Thank you kind sir! :)

niico Over a year ago

The properties page seems to have been removed in VS 2019?!

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