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using
NPOI.HSSF.UserModel;
using NPOI.HPSF;
using
NPOI.POIFS.FileSystem;
using NPOI.SS.UserModel;
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///
<summary>
///
操作EXCEL导出数据报表的类
///
</summary>
public class
DataToExcel
{
///
<summary>
/// 以HTTP的形式创建Excel文件
///
</summary>
///
<param name="ds"></param>
public
static void CreateExcel(DataSet ds)
{
HSSFWorkbook hssfworkbook;
string filename = DateTime.Now.ToString("yyyyMMddHHmmssff") +
".xls";
HttpContext.Current.Response.ContentType =
"application/vnd.ms-excel";
HttpContext.Current.Response.AddHeader("Content-Disposition",
string.Format("attachment;filename={0}", filename));
HttpContext.Current.Response.Clear();
InitializeWorkbook(out hssfworkbook);
GenerateData(ref hssfworkbook, ds.Tables[0]);
HttpContext.Current.Response.BinaryWrite(WriteToStream(hssfworkbook).GetBuffer());
HttpContext.Current.Response.End();
}
///
<summary>
///
写入字符流
///
</summary>
///
<param name="hssfworkbook"></param>
///
<returns></returns>
private static MemoryStream WriteToStream(HSSFWorkbook
hssfworkbook)
{
MemoryStream file = new MemoryStream();
hssfworkbook.Write(file);
return file;
}
///
<summary>
///
数据转换
///
</summary>
///
<param name="hssfworkbook"></param>
private static void GenerateData(ref HSSFWorkbook hssfworkbook, DataTable
dt)
{
ISheet sheet1 = hssfworkbook.CreateSheet("Sheet1");
IRow row0 = sheet1.CreateRow(0);
for (int z = 0; z < dt.Columns.Count; z++)
{
row0.CreateCell(z).SetCellValue(dt.Columns[z].ColumnName.ToString());
}
for (int i = 0; i < dt.Rows.Count; i++)
{
IRow row = sheet1.CreateRow(i + 1);
for (int j = 0; j < dt.Columns.Count; j++)
{
row.CreateCell(j).SetCellValue(dt.Rows[i][j].ToString());
}
}
}
///
<summary>
///
初始化工作薄
///
</summary>
///
<param name="hssfworkbook"></param>
private static void InitializeWorkbook(out HSSFWorkbook
hssfworkbook)
{
hssfworkbook = new HSSFWorkbook();
DocumentSummaryInformation dsi =
PropertySetFactory.CreateDocumentSummaryInformation();
dsi.Company = "";
hssfworkbook.DocumentSummaryInformation = dsi;
SummaryInformation si =
PropertySetFactory.CreateSummaryInformation();
si.Subject = "";
hssfworkbook.SummaryInformation = si;
}
}
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npoi实现数据导出Excel,布布扣,bubuko.com
原文：http://www.cnblogs.com/jameslif/p/3746030.html