因近期项目遇到所以记录一下：
首先导出Excel ：
首先引用NPOI包
http://pan.baidu.com/s/1i3Fosux
（Action一定要用FileResult）
/// <summary>
/// 批量导出本校第一批派位学生
/// </summary>
/// <returns></returns>
public FileResult ExportStu2()
{
string schoolname = "401";
//创建Excel文件的对象
NPOI.HSSF.UserModel.HSSFWorkbook book = new NPOI.HSSF.UserModel.HSSFWorkbook();
//添加一个sheet
NPOI.SS.UserModel.ISheet sheet1 = book.CreateSheet("Sheet1");
//获取list数据
List<TB_STUDENTINFOModel> listRainInfo = m_BLL.GetSchoolListAATQ(schoolname);
//给sheet1添加第一行的头部标题
NPOI.SS.UserModel.IRow row1 = sheet1.CreateRow(0);
row1.CreateCell(0).SetCellValue("电脑号");
row1.CreateCell(1).SetCellValue("姓名");
//将数据逐步写入sheet1各个行
for (int i = 0; i < listRainInfo.Count; i++)
{
NPOI.SS.UserModel.IRow rowtemp = sheet1.CreateRow(i + 1);
rowtemp.CreateCell(0).SetCellValue(listRainInfo[i].ST_CODE.ToString());
rowtemp.CreateCell(1).SetCellValue(listRainInfo[i].ST_NAME.ToString());
}
// 写入到客户端
System.IO.MemoryStream ms = new System.IO.MemoryStream();
book.Write(ms);
ms.Seek(0, SeekOrigin.Begin);
return File(ms, "application/vnd.ms-excel", "第一批电脑派位生名册.xls");
}
前台直接写就可实现：
1、 @Html.ActionLink("点击导出名册", "ExportStu2")
下面说一下导出：
首先说一些前台吧，mvc上传注意必须加 new { enctype = "multipart/form-data" }：
<td>
2、@using(@Html.BeginForm("ImportStu", "ProSchool", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
<text>选择上传文件：（工作表名为“Sheet1”，“电脑号”在A1单元格。）</text>
<input name="file" type="file" id="file" />
<input type="submit" name="Upload" value="批量导入第一批电脑派位名册" />
}
</td>
后台实现：只传路径得出DataTable：
/// <summary>
/// Excel导入
/// </summary>
/// <param name="filePath"></param>
/// <returns></returns>
public DataTable ImportExcelFile(string filePath)
{
HSSFWorkbook hssfworkbook;
#region//初始化信息
try
{
using (FileStream file = new FileStream(filePath, FileMode.Open, FileAccess.Read))
{
hssfworkbook = new HSSFWorkbook(file);
}
}
catch (Exception e)
{
throw e;
}
#endregion
using (NPOI.SS.UserModel.ISheet sheet = hssfworkbook.GetSheetAt(0))
{
DataTable table = new DataTable();
IRow headerRow = sheet.GetRow(0);//第一行为标题行
int cellCount = headerRow.LastCellNum;//LastCellNum = PhysicalNumberOfCells
int rowCount = sheet.LastRowNum;//LastRowNum = PhysicalNumberOfRows - 1
//handling header.
for (int i = headerRow.FirstCellNum; i < cellCount; i++)
{
DataColumn column = new DataColumn(headerRow.GetCell(i).StringCellValue);
table.Columns.Add(column);
}
for (int i = (sheet.FirstRowNum + 1); i <= rowCount; i++)
{
IRow row = sheet.GetRow(i);
DataRow dataRow = table.NewRow();