How to Validate Web Service URL in ASP.Net

this worked for me..

string Http_URL = HttpUtility.UrlDecode(URL);

 

                   
HttpWebRequest lObjReq = (HttpWebRequest)HttpWebRequest.Create(Http_URL);

 

                   
lObjReq.Timeout = 36000;

                   
lObjReq.UseDefaultCredentials = true;

                   

                   
if (lObjReq.GetResponse().ContentLength
> 0)

                   
{

                        Output_Err = "";

                        lStrLog = URL
+ " is a Valid URL.";

                        return true;

                    }

                    else

                    {

                        lStrLog = Output_Err = "Invalid URL or Web Service.";

                        return false;

                   
}