[Mono-aspnet-list] Can't access class in App_Code from code behind

don rhummy donrhummy at yahoo.com
Mon Jan 7 22:09:59 UTC 2013

I have a class in a file "MYClass.cs" that's in the "App_Code" folder. I'm able to use this in an "aspx" file but not from a code-behind file. How do I make it visible to a code-behind?

My files:

ASPX FILE (testappcode.aspx)
<%@ Page language="c#" src="TestAppCode.aspx.cs" Inherits="TestAppCode.TestAppCode" AutoEventWireup="true" %>
    <title>Test App_Code Folder</title>
    <form id="contactForm" runat="server">
        <asp:TextBox id="Name" runat="server" ></asp:TextBox>
        <asp:TextBox id="Age" runat="server" ></asp:TextBox>
        <asp:Button ID="Submit" runat="server" Text="Submit" onclick="SubmitForm" />

CODE BEHIND (TestAppCode.aspx.cs)
using System;
using System.Web.UI.WebControls;

namespace TestAppCode
    public class TestAppCode : System.Web.UI.Page
        protected void SubmitForm(object sender, EventArgs e)
            //It fails here with the error: CS0246: The type or namespace name
            //`MyAppCodeClass' could not be found. Are you missing a using 
            //directive or an assembly reference?
            MyAppCodeClass m = new MyAppCodeClass();

APP_CODE CLASS (App_Code/MyAppCodeClass.cs)
public class MyAppCodeClass
         public MyAppCodeClass() {}
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