DataTable Log = DbHelperSQL.Query(" select * from WorkSummaryLog ").Tables[0];
//查出数据库的数据放入DataTable表内
ExcelWorksheet ws = pck.Workbook.Worksheets.Add("he");
//为页码添加一个名字
ws.Cells["a1"].LoadFromDataTable(Log, true);
//导出从a1开始
var data = pck.GetAsByteArray();
//保存和归来的Excel文件作为一个ByteArray
context.Response.Clear();
//输出头文件
context.Response.AddHeader("content-disposition", "attachment; filename=日志记录.xlsx");
context.Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
context.Response.BinaryWrite(data);
context.Response.Flush();
context.Response.End();