NPOI读取Excel

项目环境：Webform framework4.0

dll版本：NPOI2.0  dotnet2.0版本

这两天要做个excel导入的功能，想到以前用过NPOI，感觉很给力，今天写了个DEMO，写的时候还算顺利，毕竟以前用过，还是想记录下来，留着以后直接复制

把excel数据读取并拼接到DataTable中，为了使用SqlBulkCopy一次性拷贝到数据库中

 1             IWorkbook workbook = null;

 2             string fileExt = Path.GetExtension(path);

 3             try

 4             {

 5                 using (var file = new FileStream(path, FileMode.Open, FileAccess.Read))

 6                 {

 7                     if (fileExt == ".xls")

 8                         workbook = new HSSFWorkbook(file);

 9                     else if (fileExt == ".xlsx")

10                         workbook = new XSSFWorkbook(file);

11                     else

12                     {

13 

14                     }

15                 }

16             }

17             catch (Exception ex)

18             { }

View Code

 1 //获取sheet页

 2             var sheet = workbook.GetSheetAt(0);

 3             //获取总条数

 4             int RowCount = sheet.LastRowNum;

 5             //获取sheet页的第一条数据

 6             IRow firstRow = sheet.GetRow(0);

 7             //获取总列数

 8             int CellCount = firstRow.LastCellNum;

 9 

10             DataTable dt = new DataTable();

11             for (int j = 0; j < CellCount; j++)

12             {

13                 string value = firstRow.GetCell(j).StringCellValue;

14                 DataColumn dc = new DataColumn(value, typeof(String));

15                 dt.Columns.Add(dc);

16             }

17 

18             for (int i = 1; i <= RowCount; i++)

19             {

20                 IRow row = sheet.GetRow(i);

21                 DataRow dr = dt.NewRow();

22                 for (int j = 0; j < CellCount; j++)

23                 {

24                     object obj = row.GetCell(j);

25                     if (obj != null)

26                         dr[j] = obj.ToString();

27                     else

28                         dr[j] = "";

29                 }

30                 dt.Rows.Add(dr);

31             }

View Code

最后使用SqlBulkCopy

SqlBulkCopy sqlbulkcopy = new SqlBulkCopy(connectionString, SqlBulkCopyOptions.UseInternalTransaction);

sqlbulkcopy.DestinationTableName = "Table_1";//数据库中的表名

sqlbulkcopy.WriteToServer(dataset.Tables[0]);