c#导出Excel操作

    //导出为Excel
    protected void btnExecl_Click(object sender, EventArgs e)
    {
        DataSet myds = new DataSet();
        string ConnectionString = WebConfigurationManager.ConnectionStrings["TMSDatabase"].ConnectionString;
        string actionid = GetParameter("id");
        using (SqlConnection conn = new SqlConnection(ConnectionString))
        {
            conn.Open();
            string sqlstr = " SELECT b.UserName 人员姓名,s.[Score_Teammate] 互评得分合计,s.[Score_Leader] 处长打分,s.[Score_Summary] 最终得分 FROM [P
                      + "where  s.[Assess_Action_ID]='" + actionid + "' and s.IsHistory='true' order by s.[Score_Summary] desc";
            SqlDataAdapter myda = new SqlDataAdapter(sqlstr, conn);
            myda.Fill(myds, "ExportExcel");
        }
        if (myds.Tables[0].Rows.Count > 0)
        {
            CreateExcel(myds);
        }
        else
        {
            Response.Write("<script type='text/javascript'>alert('没有要倒出的数据!');</script>");
        }
    }
    #region 导出EXCEl事件
    public void CreateExcel(DataSet dsExportExcel)
    {
        try
        {
            //导出
            XlsDocument xls = new XlsDocument();
            //xls.FileName = "workstat.xls";
            xls.FileName = DateTime.Now.ToString("yyyyMMddHHmmss", System.Globalization.DateTimeFormatInfo.InvariantInfo);

            Worksheet sheet = xls.Workbook.Worksheets.Add("Sheet1");
            //填充表头   
            foreach (DataColumn col in dsExportExcel.Tables[0].Columns)
            {
                string[] columnNames = col.ColumnName.Split('#');

                Cell cell = sheet.Cells.Add(1, col.Ordinal + 1, col.ColumnName);
                cell.Font.FontFamily = FontFamilies.Roman; //字体   
                cell.Font.Bold = true;  //字体为粗体 
            }
            //填充内容   
            string strvare = "";
            for (int i = 0; i < dsExportExcel.Tables[0].Rows.Count; i++)
            {
                for (int j = 0; j < dsExportExcel.Tables[0].Columns.Count; j++)
                {
                    if (j == 15)
                    {
                        if (dsExportExcel.Tables[0].Rows[i][j].ToString() == "-1")
                        {
                            strvare = "超时";
                        }
                        if (dsExportExcel.Tables[0].Rows[i][j].ToString() == "1")
                        {
                            strvare = "";
                        }
                    }
                    else
                    {
                        strvare = dsExportExcel.Tables[0].Rows[i][j].ToString();
                    }
                    sheet.Cells.Add(i + 2, j + 1, strvare);
                }
            }

            xls.Send();
        }
        catch
        {
            Response.Write("<script language=javascript>'导出excel错误'</script>");
        }

    }
    #endregion

引用命名空间：using org.in2bits.MyXls;

需要用到的dll下载地址

附带DLL文件