CreateUserWizardDesigner Class

using System;
using System.IO;
using System.ComponentModel;
using System.Web.UI.WebControls;
using System.Web.UI;
using System.Web.UI.Design;
using System.Web.UI.Design.WebControls;
//using Examples.WebNet.Design; 

namespace Examples.WebNet
{
    // Create a class that extends CreateUserWizardDesigner. 
    public class MyCreateUserWizardDesigner : CreateUserWizardDesigner
    {
        // This variable contains debugging information. 
        private string debugInfo = "Useful information.";

        // Override the GetErrorDesignTimeHtml method to add some more 
        // information to the error message. 
        protected override string GetErrorDesignTimeHtml(Exception e)
        {
            // Get the error message from the base class.
            string html = base.GetErrorDesignTimeHtml(e);

            // Append the debugging information to it.
            html += "<br>" + "DebugInfo: " + debugInfo;

            // Return the error message. 
            return html;
        }
    }
}

using System;
using System.IO;
using System.ComponentModel;
using System.Web.UI.WebControls;
using System.Web.UI;
using System.Web.UI.Design;
using System.Web.UI.Design.WebControls;
//using Examples.WebNet; 

namespace Examples.WebNet
{
    // Create a class that extends CreateUserWizard and uses 
    // MyCreateUserWizardDesigner as its designer.

    [Designer(typeof(Examples.WebNet.MyCreateUserWizardDesigner))]
    public class MyCreateUserWizard : CreateUserWizard
    {
    }
}