WebBrowser URI in Listbox

Question

How to get the URI from webbrowser in listbox?? this code add a 20 URI not 1:

private void webBrowser1_DocumentCompleted(object sender, 

WebBrowserDocumentCompletedEventArgs e)
{
    radListControl1.Items.Add(webBrowser1.Url.AbsoluteUri.ToString());
}

or

private void webBrowser1_Navigated(object sender, WebBrowserNavigatedEventArgs e)
{
    radListControl1.Items.Add(webBrowser1.Url.AbsoluteUri.ToString());
}

Answer 1

 if (!radListControl1.Items.Contains(webBrowser1.Url.ToString()))
     radListControl1.Items.Add(webBrowser1.Url.ToString());

Because this event is fired multiple times in single page load...

Answer 2

you need to check the URI provided by the event against the one in browser:

private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
   if (e.Url.Equals(webBrowser1.Url)) 
    // this is the real one
}

EDIT: actually, it has already been answered.