Make sure that the class defined in this code file matches the 'inherits' attribute import

Question

So I'm new to using asp.net with VB.NET and I'm running into this error:

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: Imports System.Data.SQLite

Line 2: Imports System.Diagnostics

Source File: C:\Projects\HousingInfo\HousingInfo\SQLiteDatabase.aspx.vb Line: 1

I believe from all my googling that it has something to do with this line:

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="SQLiteDatabase.aspx.vb" Inherits="SQLiteDatabase" %>

This is the code for the database:

Imports System.Data.SQLite Imports System.Diagnostics Public Class SQLiteDatabase Private Shared dbConnection As String Public Sub New() dbConnection = "Data Source=housingInfo.db" CreateTables() End Sub Public Sub New(file) dbConnection = String.Format("Data Source={0}", file) CreateTables() End Sub <System.Web.Services.WebMethod()> Public Shared Function CreateTables() Debug.WriteLine("Creating Tables") Dim connection = New SQLiteConnection(dbConnection) connection.Open() Try Dim stm As String = "CREATE TABLE IF NOT EXISTS houses(id INTEGER PRIMARY KEY AUTOINCREMENT, address TEXT, city TEXT, state TEXT, rented INTEGER)" Catch ex As Exception MsgBox("Can't create table: " & ex.Message) End Try Return Nothing End Function End Class

I'm confused. Can I not have import statements in my code?

You are not inheriting the Page or UserControl -class, just as the error message states. Add Inherits Page to your class — Esko
– Esko, Commented Oct 20, 2015 at 18:22

D Stanley · Accepted Answer · 2015-10-20 18:28:44Z

1

ASP.NET "pages" must inherit from either Page, UserControl, or a class that inherits from one of those at some point in the hierarchy. you are "inheriting" the SQLiteDatabase class, which is neither a Page nor a UserControl.

Typically this is done for you by the designer, so either you're writing everything from scratch or you've changed the markup to inherit from a different class.

answered Oct 20, 2015 at 18:28

D Stanley

153k12 gold badges189 silver badges257 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Michael Over a year ago

I've add Inherits Page to my .aspx.vb file but for some reason I still cannot get the client to call server side. Here's the javascript snippet: <script type='text/javascript'> function CreateTables() { PageMethods.CreateTables(); } </script>

D Stanley Over a year ago

@MichaelWang Do you not have a code-behind class that inherits from Page that has the CreateTables method defined? Sounds like you're either trying to learn on your own or following a bad tutorial. You shouldn't have to monkey with the Inherits tag at all unless you know what you're doing.

Collectives™ on Stack Overflow

Make sure that the class defined in this code file matches the 'inherits' attribute import

1 Answer 1

2 Comments

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Related