Class in app_code cannot be referenced

Why can't I reference the class in app_code when vs2005 is installed with the SP1 Patch? "Add ASP. ". Net folder" does not contain app_code. Adding a common folder and naming it as app_code can no longer be referenced by adding class files. What is the problem? Program








In a web application, you cannot add an ASP. NET folder by right-clicking project> Add->. Because the app_code in the Web application does not exist. However, you can manually create a folder and name it app_code. In this way, the app_code created in the website looks the same. Don't be happy. It's not that simple. When you create a class in app_code, you will find no smart prompts. When the page is referenced in the background, an error is reported, indicating that the reference does not exist. The solution is to select your class file and change the "generate operation" default "content" in the "advanced" attribute to compile. This is enough. You can also add "app_localresources" to the Web application project. You can add classes in this folder without adding the app_code folder. You can also create any folder or directly add classes without folders. You only need to modify the "generate operation" of the class's advanced attributes to "compile.