>>>Hi everybody,
>>>
>>>I have a textbox which will allow to enter a valid URL (https or http). Do you know what code should I use for validation of the user's input?
>>>
>>>Thanks in advance.
>>
>>You only want to br sure that the input is valid or you want to be sure that the site really exists?
>
>I think both.
How about:

DEFINE  FLAG_ICC_FORCE_CONNECTION 1
 
DECLARE Long InternetCheckConnection IN Wininet.dll String Url, Long dwFlags, Long Reserved
 
* Fast and reliable web site
lcUrl = youtTextBoxValue

IF InternetCheckConnection(lcUrl, FLAG_ICC_FORCE_CONNECTION, 0) <> 0
   ? "Valid URL"
ELSE
   ? "Can not veryfy the URL"
ENDIF