一、本機直接上網時：

　　　　#region 獲取指定遠程網頁內容
        /// <summary>
        /// 獲取指定遠程網頁內容
        /// </summary>
        /// <param name="strurl">所要查找的遠程網頁地址</param>
        /// <param name="timeout">超時時長設置，一般設置為8000</param>
        /// <param name="entertype">是否輸出換行符，0不輸出，1輸出文本框換行</param>
        /// <param name="encodetype">編碼方式</param>
        /// <returns></returns>
        ///  也可考慮 static string
       
        public string getrequeststring(string strurl,int timeout,int entertype,encoding encodetype)
        {
            string strresult;
            try
            {
                httpwebrequest myreq = (httpwebrequest)httpwebrequest.create(strurl) ;
                myreq.timeout = timeout;
                httpwebresponse httpwresp = (httpwebresponse)myreq.getresponse();
                stream mystream = httpwresp.getresponsestream () ;
                streamreader sr = new streamreader(mystream , encodetype);
                stringbuilder strbuilder = new stringbuilder();

                while (-1 != sr.peek())
                {
                    strbuilder.append(sr.readline());
                    if(entertype==1)
                    {
                        strbuilder.append("/r/n");
                    }
                }
                strresult = strbuilder.tostring();
            }
            catch(exception err)
            {
                strresult = "請求錯誤：" + err.message;
            }
            return strresult ;
        }

        #endregion

　　二：通過域環境代理上網時這樣就不行了！ 下篇文章分解，呵呵！