DevExpress code doesn't work

I have the following code that works in a ASPxGridViewDemo but doesn't work when I copied it to a separate solution in VS 2010:

It says that for the hlItem "The name 'hlItem' does not exist in the current contex".

What's wrong?

using System;
using System.Web.UI;
using System.ComponentModel;
using DevExpress.Web.ASPxHeadline;

public partial class DemoNavBarItemTemplate : UserControl {
    private static readonly object EventHeadlineDataBinding = new object();
    private bool isSelected;

    public string ContentText {
        get { return hlItem.ContentText; }
        set { hlItem.ContentText = value; }
    }
    public string NavigateUrl {
        get { return hlItem.NavigateUrl; }
        set { hlItem.NavigateUrl = value; }
    }
    public bool IsSelected {
        get { return isSelected; }
        set { isSelected = value; }
    }

    // Events
    [Category("Action")]
    public event EventHandler HeadlineDataBinding {
        add { Events.AddHandler(EventHeadlineDataBinding, value); }
        remove { Events.RemoveHandler(EventHeadlineDataBinding, value); }
    }

    protected override void OnDataBinding(EventArgs e) {
        base.OnDataBinding(e);
        RaiseHeadlineDataBinding();
        if(IsSelected)
            hlItem.NavigateUrl = "";
    }
    protected void RaiseHeadlineDataBinding() {
        EventArgs args = new EventArgs();
        OnHeadlineDataBinding(args);
    }
    protected void OnHeadlineDataBinding(EventArgs e) {
        EventHandler handler = Events[EventHeadlineDataBinding] as EventHandler;
        if(handler != null)
            handler(hlItem, e);
    }
}
   

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robastaCommented:
-make sure the controls are on the aspx form, then
-in the other solution, right click the file and select 'Convert to web Application' after copying the code.

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DistillingExpertsAuthor Commented:
Hi Robasta,

Thanks a lot. It worked. Why do I have to convert to web application? In the demo it doesn't seem to be converted.
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robastaCommented:
'Convert to web app' does some 'magic' in the background. Im not exactly sure what it does but I know that it synchronizes the page.aspx with the page.aspx.designer.cs
If the two files are not in 'sync' thats when you get that error.

so when you get that error, it i usually because you copy a control to the aspx page, but then the designer file does not have the declaration for that control and therefore the control is not accessible in the code behind.
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