将控件中的数据输出保存到本地excel或word中，同时保存图片到本地（c＃）

  //把table控件中的数据保存到excel或word
  public void Save(System.Web.UI.Control source, DocumentType type)

  {
   Response.Clear();
   Response.Buffer= true;

   //设置Http的头信息,编码格式
   if (type == DocumentType.Excel)
   {
    //Excel
    Response.AppendHeader("Content-Disposition","attachment;filename=result.xls");
    Response.ContentType = "application/ms-excel";
   }
   else if (type == DocumentType.Word)
   {
    //Word
    Response.AppendHeader("Content-Disposition","attachment;filename=result.doc");
    Response.ContentType = "application/ms-word";
   }

   //设置编码
   Response.Charset="GB2312"; 
   Response.ContentEncoding=System.Text.Encoding.GetEncoding("GB2312");

   //关闭控件的视图状态
   source.EnableViewState =false;  

   //初始化HtmlWriter
   System.IO.StringWriter writer = new System.IO.StringWriter() ;
   System.Web.UI.HtmlTextWriter htmlWriter = new System.Web.UI.HtmlTextWriter(writer);
   source.RenderControl(htmlWriter);

   //输出
   Response.Write(writer.ToString());

   Response.End();
  }

 
   //以下是保存图片
   public void SavePic()
  {
   string path = Server.MapPath(".") + @"\images\Chart.jpeg";
   FileStream file = File.OpenRead(path);
   byte[] content = new byte[file.Length];
   file.Read(content,0,content.Length);
   file.Close();

   Response.Clear();
   Response.AppendHeader("Content-Disposition","attachment;filename=Chart.jpeg");
   Response.ContentType = "image/jpeg";//设置Http的头信息
   Response.BinaryWrite(content);//输出
   
   Response.End();
  }

不过图片保存完后，页面上的DropDownList的Select事件不能促发，不晓得是什么缘故，而页面上的button事件却可以激发事件，不知道大家有没有出现过这种问题？可以讨论一下，还是我保存图片的过程有问题?

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