using?System;
using?System.Collections.Generic;
using?System.Linq;
using?System.Text;
using?System.Net;
using?CsharpHttpHelper.baseBll;
using?System.Drawing;
using?CsharpHttpHelper.Helper;
using?CsharpHttpHelper.Item;
using?System.Collections.Specialized;
using?System.Runtime.Remoting.Messaging;

namespace?CsharpHttpHelper
{
????///?

????///?gethtml方法異步調用的委托
????///?

????///?
????///?
????public?delegate?void?ResultHandler（HttpResult?item）;

????///?

????///?Http幫助類??Copyright：http://www.httphelper.com/
????///?版本：2.2.0
????///?作者：蘇飛
????///?更新時間：2018-7-2
????///?

????public?class?HttpHelper
????{
????????#region?Private?Obj

????????///?

????????///?HttpHelperBLL
????????///?

????????private?HttpHelperBll?bll?=?new?HttpHelperBll（）;
????????///?

????????///?gethtml方法異步調用的委托
????????///?

????????///?
????????///?
????????private?delegate?HttpResult?GethtmlHandler（HttpItem?item）;
????????///?

????????///?異步調用方法委托
????????///?

????????private?ResultHandler?resultheadler;
????????#endregion

????????#region?HttpHelper
????????///?

????????///?根據相傳入的數據，得到相應頁面數據
????????///?

????????///?參數類對象
????????///?返回HttpResult類型
????????public?HttpResult?GetHtml（HttpItem?item）
????????{
????????????return?bll.GetHtml（item）;
????????}
????????///?

????????///?GetHtml方法的異步調用方式，根據相傳入的數據，得到相應頁面數據
????????///?

????????///?參數類對象
????????///?回調的方法名
????????public?void?BeginInvokeGetHtml（HttpItem?item?ResultHandler?resultMainName）
????????{
????????????resultheadler?=?resultMainName;
????????????GethtmlHandler?handler?=?new?GethtmlHandler（GetHtml）;
????????????handler.BeginInvoke（item?new?AsyncCallback（CallbackFunc）?“AsycState:OK“）;
????????}
????????///?

????????///?內部回調方法
????????///?

????????///?返回值
????????private?void?CallbackFunc（IAsyncResult?resultType）
????????{
????????????//result?是“加法類.Add（）方法”的返回值?????????????
????????????//AsyncResult?是IAsyncResult接口的一個實現類，引用空間：System.Runtime.Remoting.Messaging?????????????
????????????//AsyncDelegate?屬性可以強制轉換為用戶定義的委托的實際類。
????????????GethtmlHandler?handler?=?（GethtmlHandler）（（AsyncResult）resultType）.AsyncDelegate;
????????????HttpResult?result?=?handler.EndInvoke（resultType）;
????????????//回調方法傳回執行結果
????????????resultheadler.Invoke（result）;
????????}
????????///?

????????///?根據Url獲取圖片
????????///?

????????///?HttpItem參數
????????///?返回圖片，錯誤為NULL
????????public?Image?GetImage（HttpItem?item）
????????{
????????????return?bll.GetImage（item）;
????????}
????????///?

????????///?快速請求方