//用户验证数据         

string username = "****";//微博登录名

string password = "****";   //微博登录密码

string usernamePassword = username + ":" + password;

 //调用URL及POST数据           

 string url = "http://api.t.sina.com.cn/statuses/update.json";            string news_title = this.txtContent.Text;         

   int news_id = 62747;           

 string t_news = string.Format("{0},http://weibo.com/n/{1}/", news_title, news_id);           

 string data = "source=****&status=" + System.Web.HttpUtility.UrlEncode(t_news);          

  //准备用于发起请求的httpWebRequest对象：            System.Net.WebRequest webrequet = System.Net.WebRequest.Create(url);    

        System.Net.HttpWebRequest httprequest = webrequet as System.Net.HttpWebRequest;          

  //准备用于用户验证的凭据：            

System.Net.CredentialCache myCahe = new System.Net.CredentialCache();            

myCahe.Add(new Uri(url), "Basic", new System.Net.NetworkCredential(username, password));

httprequest.Credentials = myCahe;            httprequest.Headers.Add("Authorization", "Basic" + Convert.ToBase64String(new System.Text.ASCIIEncoding().GetBytes(usernamePassword)));           

 //发起POST请求           

 httprequest.Method = "POST";           

 httprequest.ContentType = "application/x-www-form-urlencoded";            System.Text.Encoding encoding = System.Text.Encoding.ASCII;            byte[] bytesToPost = encoding.GetBytes(data);            httprequest.ContentLength = bytesToPost.Length;            System.IO.Stream requestStream = httprequest.GetRequestStream();            requestStream.Write(bytesToPost, 0, bytesToPost.Length);            requestStream.Close();            

//获取服务器端响应的内容           

 System.Net.WebResponse wr = httprequest.GetResponse();  //这行报403 错误，

          System.IO.Stream receiveSteam = wr.GetResponseStream();           

 using (System.IO.StreamReader reader=new System.IO.StreamReader(receiveSteam,System.Text.Encoding.UTF8))            {                string responeContent = reader.ReadToEnd();            }

----------------------------------------------------------------------------------

int news_id = 62747;
string t_news = string.Format("{0}，http://news.cnblogs.com/n/{1}/", news_title, news_id );

news_id 应该填写什么内容，还有小括号里的ID  原文，借鉴

http://www.xueit.com/html/2010-05/21-1947494524201051310222846.html

请高手解答！