What is the cause of compilation error in my code
<p>I am running asp.net, C#4.0 application in VS2010. I get the following compilation error:</p>

<pre><code>Server Error in '/' Application.

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.Collections.Generic;

Line 3:  using System.Linq;
</code></pre>

<p>My page attribute is :</p>

<pre><code>&lt;%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs"
    EnableEventValidation="false" Inherits="jsPlumb_jsPlumb_Default2" %&gt;
</code></pre>

<p>my c#codebehind class:</p>

<pre><code>  namespace CompanyDisplay.jsPlumb.jsPlumb.jsPlumb
  {
        public  class jsPlumb_jsPlumb_Default2 : System.Web.UI.Page
        {
    }
}
</code></pre>

<p>i want namespace to present for running some webservice applications.</p>
