publicstaticvoid Disconnect()
{
string url ="断 线";
    
string uri ="http://192.168.1.1/userRpm/StatusRpm.htm?Disconnect="+ System.Web.HttpUtility.UrlEncode(url, System.Text.Encoding.GetEncoding("gb2312")) +"&wan=1";
    
string sUser ="admin";
    
string sPwd ="admin";
    
string sDomain ="";
    NetworkCredential oCredential;
    HttpWebRequest oRequest
= (System.Net.HttpWebRequest)WebRequest.Create(uri);
    
if (oRequest !=null)
    {
oRequest.ProtocolVersion
= HttpVersion.Version11;// send request
        oRequest.Method ="GET";
        oRequest.ContentType
="application/x-www-form-urlencoded";
        oRequest.UserAgent
="Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; GTB6.4; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)";
        oRequest.Referer
="http://192.168.1.1";

        
if (sUser != String.Empty)
        {
oCredential
=new NetworkCredential(sUser, sPwd, sDomain);
             oRequest.Credentials
= oCredential.GetCredential(new Uri(uri), String.Empty);
        }
        
else
        {
             oRequest.Credentials
= CredentialCache.DefaultCredentials;
        }
        StreamReader sr
=new StreamReader(oRequest.GetResponse().GetResponseStream(), System.Text.Encoding.Default);
        
string line = sr.ReadToEnd();
        sr.Close();
        
if (line.IndexOf("LAN口状态") >-1)//登录成功
        {
             Console.WriteLine(
"断开登录成功");
        }
        
else
        {
            Console.WriteLine(
"断开登录失败");
        }
    }
}