Aspose.Cells---把DataTable数据导出到Excel

1,工具类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.IO;
using Aspose.Cells;
using System.Web;



namespace WebBrowserEx.Common
{
   public static class ImportExcel
    {


       public static string  ToExcel(this DataTable dt, string fullFileName)
       {

           Workbook workbook = new Workbook();
           Worksheet cellSheet = workbook.Worksheets[0];

           cellSheet.Name = dt.TableName;

           int rowIndex = 0;
           int colIndex = 0;
           int colCount = dt.Columns.Count;
           int rowCount = dt.Rows.Count;

           //列名的处理
           for (int i = 0; i < colCount; i++)
           {
               cellSheet.Cells[rowIndex, colIndex].PutValue(dt.Columns[i].ColumnName);
               //cellSheet.Cells[rowIndex, colIndex].SetStyle.Font.IsBold = true;
               //cellSheet.Cells[rowIndex, colIndex].Style.Font.Name = "宋体";
               colIndex++;
           }

           Style style = workbook.Styles[workbook.Styles.Add()];
           style.Font.Name = "Arial";
           style.Font.Size = 10;
           StyleFlag styleFlag = new StyleFlag();
           cellSheet.Cells.ApplyStyle(style, styleFlag);

           rowIndex++;

           for (int i = 0; i < rowCount; i++)
           {
               colIndex = 0;
               for (int j = 0; j < colCount; j++)
               {
                   cellSheet.Cells[rowIndex, colIndex].PutValue(dt.Rows[i][j].ToString());
                   colIndex++;
               }
               rowIndex++;
           }
           cellSheet.AutoFitColumns();


           workbook.Save(HttpContext.Current.Server.MapPath("/UploadFiles/"+fullFileName));
           return "/UploadFiles/"+fullFileName ;
       }
       public static void WriteFile(string filePath)
        {
            var response = HttpContext.Current.Response;
            try
           {
               
                filePath =HttpContext.Current.Server.MapPath(filePath);
               if (File.Exists(filePath))
               {
                    
                   FileInfo info = new FileInfo(filePath);
                   long fileSize = info.Length;
                    response.Clear();
                    response.ContentType = "application/octet-stream";
                    response.AddHeader("Content-Disposition", "attachement;filename=" + System.Web.HttpContext.Current.Server.UrlEncode(info.FullName));
                    //指定文件大小   
                    response.AddHeader("Content-Length", fileSize.ToString());
                    response.WriteFile(filePath, 0, fileSize);
                    response.Flush();
               }
           }
           catch
           { }
           finally
           {
                response.Close();
           }
       }

    
    }
}

2，调用示例

   var dt = new DataTable();
         dt.Columns.Add("提交人",typeof(string));
         dt.Columns.Add("公司名称", typeof(string));
         dt.Columns.Add("号牌类型", typeof(string));
         dt.Columns.Add("车牌号", typeof(string));
         dt.Columns.Add("车辆类型", typeof(string));
         dt.Columns.Add("身份证号码", typeof(string));
         dt.Columns.Add("持有人", typeof(string));
         dt.Columns.Add("电话", typeof(string));
         dt.Columns.Add("核定载客数量", typeof(string));
         dt.Columns.Add("识别代码", typeof(string));
         dt.Columns.Add("发动机号码", typeof(string));
         dt.Columns.Add("身份证类型", typeof(string));
         dt.Columns.Add("地址", typeof(string));
         dt.Columns.Add("有效期", typeof(string));
         dt.Columns.Add("邮编", typeof(string));  
         dt.Columns.Add("品牌", typeof(string));
         dt.Columns.Add("核定载质量", typeof(string));
         dt.Columns.Add("车辆型号", typeof(string));
         dt.Columns.Add("提交时间", typeof(string));
         foreach (var item in data)
         {
             var dr = dt.NewRow();
             dr["提交人"] = item.User.RealName;
             dr["公司名称"] = item.User.CompanyName;
             dr["号牌类型"] = item.PlateType.ToString();
             dr["车牌号"] = item.CarNum;
             dr["车辆类型"] = item.CartType;
             dr["电话"] = item.Mobile;
             dr["身份证号码"] = item.IdCardNum;
             dr["持有人"] = item.Owner;
             dr["核定载客数量"] = item.PassengerCount;
             dr["识别代码"] = item.CarIdentificationCode;
             dr["发动机号码"] = item.EngineNum;
             dr["身份证类型"] = item.IdCartType;
             dr["地址"] = item.Address;
             dr["有效期"] = item.Yxq;
             dr["邮编"] = item.PostCode;
             dr["品牌"] = item.BrandName;
             dr["核定载质量"] = item.Quality.ToString();
             dr["车辆型号"] = item.CarModel;
             dr["提交时间"] = item.AddTime.ToString("yyyy/MM/dd");
             dt.Rows.Add(dr);
         }
         //var resutl=ImportExcel.start(dt);
        var  path= ImportExcel.ToExcel(dt,DateTime.Now.ToString("yyyyMMddHHmmss")+".xls");
            
        if(path!=null){
            ImportExcel.WriteFile(path);
            Response.Write(Success("ok"));

        }

3，说明导出excle是根据DataTable的列名作为第一行

4，引用dll下载地址https://download.csdn.net/download/weixin_41609327/10758899