using System.Net;using System.Collections.Specialized;public string getPostBackStream(string rUrl){ // Create a new WebClient instance. WebClient myWebClient = new WebClient(); // Create a new NameValueCollection instance to hold // some custom parameters to be posted to the URL. NameValueCollection myNameValueCollection = new NameValueCollection(); myNameValueCollection.Add("title","this is title"); myNameValueCollection.Add("url","http://www.zl5.info/tb_client.aspx"); myNameValueCollection.Add("excerpt","this is excerpt"); byte[] responseArray = myWebClient.UploadValues(rUrl,"POST",myNameValueCollection); return Encoding.ASCII.GetString(responseArray);}