Getting an error in my asp.net page

Question

I am getting the following error message.

Any ideas how to resolve this?

Compilation Error Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: ASPNET: Make sure that the class defined in this code file matches the 'inherits' attribute, and that it extends the correct base class (e.g. Page or UserControl).

Source Error:

Line 1:  using System;
Line 2:  using System.Data;
Line 3:  using System.Data.SqlClient;

How about showing us some of the code. In particular, show the class declaration in codebehind, and show us the Page directive in the .aspx file. — John Saunders
– John Saunders, Commented Jan 17, 2010 at 3:24
I am trying to paste the code, but the code is over 600 characters long; so I will try to paste it in two pieces. This is the only code I have written: using System; using System.Data; using System.Data.SqlClient; class SqlConnectionDemo { static void Main() { SqlConnection conn = SqlConnection("Data Source=(local); Initial Catalog=JobSearchManager;Integrated Security = SSPI"); SqlDataReader rdr = null; try { conn.Open(); SqlCommand cmd = new SqlCommand("select * from Agency", conn); — LearningCSharp
– LearningCSharp, Commented Jan 17, 2010 at 3:37
rdr = cmd.ExecuteReader; while (rdr.Read()) { Console.WriteLine(rdr[0]); } } finally { if (rdr != null) { rdr.Close(); } if (conn != null) { conn.Close; } } } } — LearningCSharp
– LearningCSharp, Commented Jan 17, 2010 at 3:39
The aspx page is: <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="w3.org/1999/xhtml"> <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> </div> </form> </body> </html> — LearningCSharp
– LearningCSharp, Commented Jan 17, 2010 at 3:41

Andre Pena · Accepted Answer · 2010-01-17 03:25:45Z

2

It's exactly what the error says:

Your .ASPx file Page header has 2 atributes related to your issue: CodeFile and Inherits. The file referenced in the CodeFile attribute must have a class with the same name defined in the Inherits attribute and this class must be a Page or a UserControl.

If this doesn't solve your problem. Let me know.

answered Jan 17, 2010 at 3:25

Andre Pena

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2 Comments

Bryan Over a year ago

Andre has given you the correct answer, you need to take the time to understand what "CodeFile" and "Inherits" mean in the @Page directive.

Protector one Over a year ago

Additionally, make sure no other pages (accidentally) try to inherit a class from the same code behind file.

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