记——文章分享execl导出功能和自己导出比对

Posted 2020-10-26 xulanjun

protected void btn_Export_Click(object sender, EventArgs e)
    {
        string FileID = "";
        if (Request.QueryString["fujian"] != null && Request.QueryString["fujian"].ToString() != "")
        {
            FileID = Request.QueryString["fujian"].ToString();
        }
        string title = GetFileTile(FileID);//文件标题
        Workbook workbook = new Workbook(); //工作簿
        Worksheet sheet = workbook.Worksheets[0]; //工作表
        Cells cells = sheet.Cells; //单元格        
        //列宽
        cells.SetColumnWidth(0, 20.00);
        cells.SetColumnWidth(1, 30.00);
        cells.SetColumnWidth(2, 30.00);
        cells.Merge(0, 0, 1, 3);//合并单元格
 
        cells[0, 0].PutValue(title + "/文件已学人员名单");
        cells[0, 1].PutValue("");
        cells[0, 2].PutValue("");
        cells[1, 0].PutValue("序号");
        cells[1, 1].PutValue("姓名");
        cells[1, 2].PutValue("时间");
        string sql = "order by StudyTime";
        ds = PublishBLL.GetCommentCount(FileID, sql);
        if (ds.Tables[0].Rows.Count > 0)
        {
 
            for (int i = 1; i < ds.Tables[0].Rows.Count + 1; i++)
            {
                //Aspose.Cells.Style styleTitle = workbook.Styles[workbook.Styles.Add()];//新增样式
                //styleTitle.HorizontalAlignment = TextAlignmentType.Center;//文字居中
                //styleTitle.Font.Name = "宋体";//文字字体
                //styleTitle.Font.Size = 18;//文字大小
                //styleTitle.Font.IsBold = true;//粗体
                cells[i + 1, 0].PutValue("" + i.ToString().PadLeft(3, ‘0‘) + "");
                cells[i + 1, 1].PutValue("" + ds.Tables[0].Rows[i - 1]["StudyName"].ToString() + "");
                cells[i + 1, 2].PutValue("" + ds.Tables[0].Rows[i - 1]["StudyTime"].ToString() + "");
            }
        }
        string filename = "统计" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".xls";
        string path = ConfigurationManager.AppSettings["StudyFile"] + @"\" + filename + "";
        workbook.Save(path);//保存到硬盘
 
        #region 下载
        System.IO.MemoryStream ms1 = workbook.SaveToStream();//生成数据流
        byte[] bt1 = ms1.ToArray();
        string fileName = "统计" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".xls";//客户端保存的文件名
        //以字符流的形式下载文件
        Response.ContentType = "application/vnd.ms-excel"; //通知浏览器下载文件而不是打开
 
        Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
        Response.BinaryWrite(bt1);
        Response.Flush();
        Response.End();
        #endregion
    }

　我写的：缺点（无法进行execl格式调整）

 1  public void exeport(string sql, string[] tableHeaders, string FieldList, string fileName)
 2         {
 3             DataTable dataTable = DbSession.Default.FromSql(sql).ToDataTable();
 4             if (dataTable != null && dataTable.Rows.Count > 0)
 5             {
 6                 StringBuilder stringBuilder = new StringBuilder();
 7                 for (int i = 0; i < tableHeaders.Length; i++)
 8                 {
 9                     string arg = tableHeaders[i];
10                     stringBuilder.AppendFormat("\"{0}\"", arg);
11                     stringBuilder.Append("\t");
12                 }
13                 stringBuilder.Remove(stringBuilder.Length - 1, 1);
14                 stringBuilder.Append("\r\n");
15 
16                 string[] array = FieldList.Trim().Split(new char[]
17                 {
18                     ‘,‘
19                 });
20                 foreach (DataRow dataRow in dataTable.Rows)
21                 {
22                     for (int j = 0; j < array.Length; j++)
23                     {
24                         stringBuilder.AppendFormat("\"{0}\"", dataRow[array[j]].ToString()); 
25                         stringBuilder.Append("\t");//单元格分割
26                     }
27                     stringBuilder.Remove(stringBuilder.Length - 1, 1);
28                     stringBuilder.Append("\r\n");//换行
29                 }
30                 if (stringBuilder.Length > 0)
31                 {
32                     byte[] bytes = Encoding.Default.GetBytes(stringBuilder.ToString());
33                     FileStream fs = new FileStream(fileName, FileMode.Create, FileAccess.Write);
34                     fs.Write(bytes, 0, bytes.Length);
35                     fs.Flush();
36                     fs.Close();
37                 }
38             }
39 
40         }