public string GetURL(int hwnd) { ShellWindows sw = new ShellWindows(); IEnumerator windows = new ShellWindowsClass().GetEnumerator(); while (windows.MoveNext()) { if ((windows.Current as IWebBrowser2).HWND == hwnd) { if ((windows.Current is IWebBrowser2)) { IntPtr hw; IOleWindow win = ((windows.Current as IWebBrowser2).Document as IOleWindow); if (win != null) { win.GetWindow(out hw); if (IsWindowVisible(hw)) { string activeTabUrl = ((windows.Current as IWebBrowser2).Document as mshtml.IHTMLDocument2).url; return activeTabUrl; } } else { return (windows.Current as IWebBrowser2).LocationURL; } } } } return "n/a"; }