public void ProcessRequest (HttpContext context) {         string elxStr = "<table><tbody><tr><td>1</td><td>11</td></tr><tr><td>2</td><td>22</td></tr></tbody></table>";         context.Response.Clear();         context.Response.Buffer = true;         context.Response.AppendHeader("Content-Disposition", "attachment;filename=" + DateTime.Now.ToString("yyyyMMdd") + ".xls");         context.Response.ContentEncoding = System.Text.Encoding.UTF8;         context.Response.ContentType = "application/vnd.ms-excel";         context.Response.Write(elxStr);         context.Response.End();      }      public bool IsReusable {          get {              return false;          }      }