拍拍尘土

string url2 = @"http://search.cn.yimg.com/search/yisou/0510141441/yhlogopg.gif";
UrlExistsUsingHttpWebRequest(url1).ToString();
private static bool UrlExistsUsingHttpWebRequest(string url)
{
try
{
System.Net.HttpWebRequest myRequest =(System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
myRequest.Method = "HEAD";
myRequest.Timeout = 2000;
System.Net.HttpWebResponse res = (System.Net.HttpWebResponse)myRequest.GetResponse();
return (res.StatusCode == System.Net.HttpStatusCode.OK);
}
catch(System.Net.WebException we)
{
System.Diagnostics.Trace.Write(we.Message);
return false;
}
}