DLL References doesn't work in App_Code classes

Question

I get some troubles with a DLL reference.

I have MySql.Data.dll in my bin folder. And I added the reference of this dll to my project.

I can well use classes from this dll (like MySqlConnection, MySqlClient, etc) in aspx.cs but i cannot use it in classes from files from App_Code folder !

For all files situated in App_Code folder (my model classes) , the using MySql.Data; doesn't work. While it works in aspx.cs files.

Is this a web application project, or a web site project (File->New Web Site)? — John Saunders, May 15 '15 at 21:56
It's a web application project. I started by an empty asp project. — dramixx, May 15 '15 at 22:00
Ok, suggestion: don't use App_Code. Real programmers use real folders and real namespaces. — John Saunders, May 15 '15 at 22:03
@dramixx Did you look at this problem - [Can't debug class within App_Data folder](http://stackoverflow.com/a/14206137/296861)? — Win, May 16 '15 at 04:07

score 3 · Accepted Answer · answered May 16 '15 at 03:05

As you know, there are two types of projects that you can use to create a website in Visual Studio. The App_Code folder works for Web Site projects, but since you stated that you're using a Web Application project, this is causing you problems.

Here's some additional reading on this topic.

In short, I recommend just creating a different (non-built-in) folder to put your random code files in. Name it something like "code", "classes", etc.

DLL References doesn't work in App_Code classes

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