判断是否可以连接服务器?

 

private 

static 

bool IsCanConnect(

string url)

{

            HttpWebRequest req = 

null;

            HttpWebResponse res = 

null;

            

bool CanCn = 

true;   

//

设成可以连接； 

            

try

            {

                req = (HttpWebRequest)WebRequest.Create(url);

                res = (HttpWebResponse)req.GetResponse();

            }

            

catch (Exception)

            {

                CanCn = 

false;   

//

无法连接 

            }

            

finally

            {

                

if (res != 

null)

                {

                    res.Close();

                }

            }

            

return CanCn;

}