nopi导出excel的方法

/// <summary>
/// NPOI简单Demo，快速入门代码
/// </summary>
/// <param name="dtSource"></param>
/// <param name="strFileName"></param>
/// <remarks>NPOI认为Excel的第一个单元格是：(0，0)</remarks>
/// <Author>柳永法 http://www.yongfa365.com/ 2010-5-8 22:21:41</Author>
public static void ExportEasy(DataTable dtSource, string strFileName)
{
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = workbook.CreateSheet();

//填充表头
HSSFRow dataRow = sheet.CreateRow(0);
foreach (DataColumn column in dtSource.Columns)
{
dataRow.CreateCell(column.Ordinal).SetCellValue(column.ColumnName);
}


//填充内容
for (int i = 0; i < dtSource.Rows.Count; i++)
{
dataRow = sheet.CreateRow(i + 1);
for (int j = 0; j < dtSource.Columns.Count; j++)
{
dataRow.CreateCell(j).SetCellValue(dtSource.Rows[i][j].ToString());
}
}


//保存
using (MemoryStream ms = new MemoryStream())
{
using (FileStream fs = new FileStream(strFileName, FileMode.Create, FileAccess.Write))
{
workbook.Write(fs);
}
}
workbook.Dispose();
}