ERROR - Make sure that the class defined in this code file matches the 'inherits'....

[gec]

I have a user control which inherits from a class named BaseChart which is located in the App_Code directory. Source code is:

BaseChart.cs

public abstract class BaseChart : System.Web.UI.UserControl
{
WebChartViewer ChartViewer;

protected void Page_Load(object sender, EventArgs e)
{
...
}
}

GenericChart.ascx

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="GenericChart.ascx.cs" Inherits="UserControls_GenericChart" CodeFileBaseClass="BaseChart" %>

GenericChart.asc.cs

public partial class UserControls_GenericChart : BaseChart
{

}


Now that above code compiles perfectly ok. The problems begin when I add an instance of the WebChartViewer control into the GenericChart.ascx. The WebchartViewer is a 3rd party component.

Updated GenericChart.ascx
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="GenericChart.ascx.cs" Inherits="UserControls_GenericChart" CodeFileBaseClass="BaseChart" %>
<%@ Register Assembly="netchartdir" Namespace="ChartDirector" TagPrefix="chart" %>
<chart:WebChartViewer ID="ChartViewer" runat="server" />

The addition of these two extra lines of code will cause the compile error:

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).

I have added ASP.NET server controls to the GenericChart.ascx file without causing this compile error which appears to be generated from this particular control which is located in a separate assembly.

I have scoured the forums for a solution to this and have already tried and failed with the following recommended solutions:

- stop IIS, delete Temp ASP.NET files and try again
- Added the control tag prefix to the <controls> in the web.config file


Can anyone help?


gec.

 

[samayamantri]

Hello gec
You are using a thirdparty dll netchartdir.dll. for webchartviewer. in that dll you might be having BaseChart class.
that's why it is giving u the compilation error.
change you BaseChart class name to someother name it will work.

hope this solves your problem

Srinivas.