Проверьте, существует ли файл с помощью url-адреса

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How to check file exists using url, normally we have to use file exists controller on server like
File.Exists()  its working but url path like http://localhost:8081/assets/photos/test.jpg is not working. Please anyone explain ASAP

Что я уже пробовал:

var url = "http://www.domain.com/image.png";
HttpWebResponse response = null;
var request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "HEAD";


try
{
    response = (HttpWebResponse)request.GetResponse();
}
catch (WebException ex)
{
    /* A WebException will be thrown if the status of the response is not `200 OK` */
}
finally
{
    // Don't forget to close your response.
    if (response != null)
    {
        response.Close();
    }
}

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