check URL exists or throws page not found message in asp.net - asp.net

Question

I want to validate an url, whether it exists or throwing page not found error. can anyone help me how to do it in asp.net.
for e.g., my url may be like http://www.stackoverflow.com or www.google.com i.e., it may contain http:// or may not. when i check, it should return the webpage valid if exists or page not found if doesnot exists
i tried HttpWebRequest method but it needs "http://" in the url.
thanks in advance.

Answer 1

protected bool CheckUrlExists(string url)
{
// If the url does not contain Http. Add it.
if (!url.Contains("http://"))
{
url = "http://" + url;
}
try
{
var request = WebRequest.Create(url) as HttpWebRequest;
request.Method = "HEAD";
using (var response = (HttpWebResponse)request.GetResponse())
{
return response.StatusCode == HttpStatusCode.OK;
}
}
catch
{
return false;
}
}

Answer 2

Try this
using System.Net;
////// Checks the file exists or not.
bool FileExists(string url)
{
try
{
//Creating the HttpWebRequest
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
//Setting the Request method HEAD, you can also use GET too.
request.Method = "HEAD";
//Getting the Web Response.
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
//Returns TURE if it Exist
return (response.StatusCode == HttpStatusCode.OK);
}
catch
{
//Any exception will returns false. So the URL is Not Exist
return false;
}
}
Hope I Helped