Hi, I m trying to pass parameters to htm file using webbrowser control. if i m trying to use : WebBrowser.Navigate(map.htm?lat=12) there is some problem with the ' ? ' character. but when the map.htm file tries to get the parameter (long1) its always get "Undefined" value. in contrast if im just opening my chrome browser and in the url wrtie c:\path\map.htm?long1=12 the return value is ok - 12 any suggestions ??