public void OUTEXCEL(string items,string where)        {            DataSet ds = new StudentBLL().GetTable(items,where);            if (ds != null)            {                if (ds.Tables[0].Rows.Count > 65536)                {                    this.Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "", "");                    return;                }                GridView1.DataSource = ds.Tables[0];                GridView1.AllowPaging = false;                GridView1.DataBind();                Response.ClearContent();                Response.BufferOutput = true;                HttpContext.Current.Response.Charset = "UTF8";                HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.Default;//注意编码                Response.AddHeader("content-disposition", "attachment; filename=MyExcelFile.xls");                HttpContext.Current.Response.ContentType = "application/ms-excel";                // Response.ContentType = "application/excel";                    using (StringWriter sw = new StringWriter())                {                    HtmlTextWriter htw = new HtmlTextWriter(sw);                    GridView1.RenderControl(htw);                    Response.Write(sw.ToString());                }                Response.End();            }            else            {                Response.Write("");            }        }        public override void VerifyRenderingInServerForm(Control control)        {            // 方法重写        }