XMLHTTP 操作类

/****************************************************************
* 函数名称：SendCommand(SendMethod method, ST_Param p)
* 功能说明：向远程发送URL和参数,接受返回信息(无乱码);
* 参       数：method:xml发送方法,POST/Get 两种
         P:参数结构体
                 public string Url; //远程URL
                 public string Parameters; //参数
                 public string Uid; //帐号
                 public string Pwd; //号令
* 调用示列：
*              using ebcnc;       //引用空间名
*              XMLHTTP x = new XMLHTTP(); //创建设xmlhttp对像
*              XMLHTTP.ST_Param st = new XMLHTTP.ST_Param(); //创建参数数组
*              st.Parameters = "";     //url详细参数
*              st.Url = "http://www.baidu.com"; //url
*              st.Uid = ""     ; //帐号
*              st.Pwd = ""; //口令
*              string rn=””; //返回字符串
*              rn=x.SendCommand(XMLHTTP.SendMethod.POST, st); //获取返回信息
*              x.Dispose();

***********************************************************************/
using System;
using MSXML2;
namespace ebcnc
{
       /// <summary>
       /// XMLHTTP基类
       /// </summary>
       public class XMLHTTP : IDisposable
       {
           #region 变量及参数
           private XMLHTTPClass xml;
           private bool _alreadyDispose = false;

           public ST_Param Parameters;

           public enum SendMethod : int
           {
               POST, GET
           }
           #endregion

           #region 参数结构体
           public struct ST_Param
           {
               public string Url;
               public string Parameters;
               public string Uid;
               public string Pwd;
           }
           #endregion

           #region 发送数据
           /// <summary>
           /// 发送数据
           /// </summary>
           /// <param name="method">发送方式</param>
           /// <param name="p">数据</param>
           /// <returns>STRING</returns>
           public virtual string SendCommand(SendMethod method, ST_Param p)
           {
               if (p.Url == null || p.Url == "") return null;
               if (method == SendMethod.POST)
               {
                   try
                   {
                       xml.open("POST", p.Url, false, p.Uid, p.Pwd);
                       xml.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
                       xml.send(CommonFunction.UrlEncoding(p.Parameters));
                       if (xml.status == 200)
                       {
                           return System.Text.Encoding.Default.GetString((byte[])xml.responseBody);
                       }
                       else
                       {
                           return xml.status.ToString();
                       }
                   }
                   catch (Exception E)
                   {
                       return E.Message.ToString();
                   }
               }
               else if (method == SendMethod.GET)
               {
                   xml.open("GET", p.Url + "?" + CommonFunction.UrlEncoding(p.Parameters), false, p.Uid, p.Pwd);
                   xml.send(null);
                   return System.Text.Encoding.Default.GetString((byte[])xml.responseBody);
               }
               return null;
           }
           #endregion

           #region 构造与释构
           public XMLHTTP()
           {
               xml = new XMLHTTPClass();
           }
           ~XMLHTTP()
           {
               Dispose();
           }
           protected virtual void Dispose(bool isDisposing)
           {
               if (_alreadyDispose) return;
               if (isDisposing)
               {
                   if (xml != null)
                   {
                       xml = null;
                   }
               }
               _alreadyDispose = true;
           }
           #endregion

           #region IDisposable 成员

           public void Dispose()
           {
               Dispose(true);
               GC.SuppressFinalize(this);
           }

           #endregion
       }
}