public void ProcessRequest(HttpContext context)
{
var dt = DBServer.GetDataTable("select * from table");
var ms = GetExcel.DataTableToExcelXlsx(dt, "Sheet1");
ms.WriteTo(context.Response.OutputStream);
context.Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
context.Response.AddHeader("Content-Disposition", "attachment;filename=EasyEditCmsGridData.xlsx");
context.Response.StatusCode = 200;
context.Response.End();
}