Aspose.Cell和NPOI生成Excel文件2

NPOI还是比较好用的，引用dll程序集即可

1创建workbook和工作流

HSSFWorkbook workbook = new HSSFWorkbook();
MemoryStream ms = new MemoryStream();

2这里是一个多sheet的例子，可以通过循环一个个生成

List<DataTable> listtable = new List<DataTable>();
for(int t = 1; t < = listtable.Count();t++)
{
     DataTable tempTable = listtable[t-1];
     //增加sheet,listname是一个List<string>作为表明
     HSSFSheet sheet = (HSSFSheet)workbook.CreateSheet(listname[t-1]);    
     HSSFRow headerRow = (HSSFRow)sheet.CreateRow(0);
     foreach(DataColumn column in tempTable.Columns)
     {
          //创建列
          headerRow.CreateCell(column.Ordinal).SetCellValue(column.ColumnName);
     }
     int rowIndex = 1;
     foreach(DataRow row in tempTable.Rows)
     {
          //创建行
          HSSFRow dataRow = (HSSFRow)sheet.CreateRow(rowIndex);   
          foreach(DataColumn column in tempTable.Columns)
          {
               dataRow.CreateCell(column.Ordinal).SetCellValue(row[column].ToString());
          }
          rowIndex++;
     }
}        

3工作中的sheet都创建好之后，写入流

workbook.Write(ms);

4最后返回给浏览器端

byte[] strmByte = ms.ToArray();
ms.Dispose();
Response.ClearContent();
Response.ContentEncoding =  System.Text.Encoding.UTF8;
Response.ContentType = "application/octet-stream";
Response.AddHeader("Content-Disposition","attachment;fileName="+"name.xlsx");
Response.BinaryWrite(strmByte);