C#获取网页的HTML码,下载网站图片

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1、根据URL请求获取页面HTML代码

/// <summary>  /// 获取网页的HTML码  /// </summary>  /// <param name="url">链接地址</param>  /// <param name="encoding">编码类型</param>  /// <returns></returns>  public static string GetHtmlStr(string url, string encoding)  {      string htmlStr = "";      if (!String.IsNullOrEmpty(url))      {          WebRequest request = WebRequest.Create(url);            //实例化WebRequest对象          WebResponse response = request.GetResponse();           //创建WebResponse对象          Stream datastream = response.GetResponseStream();       //创建流对象          Encoding ec = Encoding.Default;          if (encoding == "UTF8")          {              ec = Encoding.UTF8;          }          else if (encoding == "Default")          {              ec = Encoding.Default;          }          StreamReader reader = new StreamReader(datastream, ec);          htmlStr = reader.ReadToEnd();                           //读取数据          reader.Close();          datastream.Close();          response.Close();      }      return htmlStr;  }

2、下载网站图片

/// <summary>  /// 下载网站图片  /// </summary>  /// <param name="picUrl"></param>  /// <returns></returns>  public string SaveAsWebImg(string picUrl)  {      string result = "";      string path = AppDomain.CurrentDomain.SetupInformation.ApplicationBase + @"/File/";  //目录      try      {          if (!String.IsNullOrEmpty(picUrl))          {              Random rd = new Random();              DateTime nowTime = DateTime.Now;              string fileName = nowTime.Month.ToString() + nowTime.Day.ToString() + nowTime.Hour.ToString() + nowTime.Minute.ToString() + nowTime.Second.ToString() + rd.Next(1000, 1000000) + ".jpeg";              WebClient webClient = new WebClient();              webClient.DownloadFile(picUrl, path + fileName);              result = fileName;          }      }      catch { }      return result;  }

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