ASP.net（gridview导出的execl没有数据）求解给分
/// <summary>
  /// 显示所有数据到grid表
  /// </summary>
  private void displayLog()
  {
  this.gSysLos.DataSource = SysLogManager.GetAllSysLog();
  this.gSysLos.DataBind();
  } 

protected void btnExportLog_Click(object sender, EventArgs e)
  {
  if (gSysLos.Rows.Count > 0)
  {
  //调用导出方法  
  ExportGridViewForUTF8(gSysLos, DateTime.Now.ToShortDateString() + ".xls");
  }
  }

/// <summary>
  /// 导出方法
  /// </summary>
  /// <param name="GridView"></param>
  /// <param name="filename">保存的文件名称</param>
  private void ExportGridViewForUTF8(ExtAspNet.Grid GridView, string filename)
  {

  string attachment = "attachment; filename=" + filename;

  Response.ClearContent();
  Response.Buffer = true;
  Response.AddHeader("content-disposition", attachment);

  Response.Charset = "UTF-8";
  Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
  Response.ContentType = "application/ms-excel";
  this.EnableViewState = false;
  System.IO.StringWriter sw = new System.IO.StringWriter();

  HtmlTextWriter htw = new HtmlTextWriter(sw);
  GridView.RenderControl(htw);

  Response.Output.Write(sw.ToString());
  Response.Flush();
  Response.End();

  }




------解决方案--------------------
GridView.AllowPaging = false;//分页去掉
displayLog();//绑定数据
HtmlTextWriter htw = new HtmlTextWriter(sw);
GridView.RenderControl(htw);


------解决方案--------------------
Response.Output.Write(sw.ToString());
改为
HttpContext.Current.Response.Write(sw.ToString());试试
------解决方案--------------------
应该不是没有导出数据吧，而是导出了一堆datarow类型的数据
你把gSysLos.Rows[RowNo]
应该改成gSysLos.Rows[RowNo].Cells[CloumnNo].Text。
我试了一下，就可以导出内容了
------解决方案--------------------
private void ToExcel(Control ctl, string FileName)
{
HttpContext.Current.Response.Charset = "UTF-8";
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF7;
HttpContext.Current.Response.ContentType = "application/ms-excel";
HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + "" + HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8));
ctl.Page.EnableViewState = false;
System.IO.StringWriter tw = new System.IO.StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(tw);
ctl.RenderControl(hw);
HttpContext.Current.Response.Write(tw.ToString());
HttpContext.Current.Response.End();
}
private void toExcelClk()
{
GridView1.AllowPaging = false;
GridView1.AllowSorting = false;
DataBindToGridview("order by id desc");
ToExcel(GridView1, "个人通讯录.xls");
GridView1.AllowPaging = true;
GridView1.AllowSorting = true;
DataBindToGridview("order by id desc");
}

 protected void Button6_Click(object