using NPOI.XSSF.UserModel;
using System.IO;
导入
/// <summary>
/// Excel转换DataTable
/// </summary>
/// <param name="FilePath">文件的绝对路径</param>
/// <returns>DataTable</returns>
public static DataTable ExcelInput(string FilePath)
{
//第一行一般为标题行。
DataTable table = new DataTable();
//根据路径通过已存在的excel来创建HSSFWorkbook，即整个excel文档
XSSFWorkbook hssfworkbook;
using (FileStream file = new FileStream(FilePath, FileMode.Open, FileAccess.Read))
{
XSSFWorkbook workbook = new XSSFWorkbook(file);
XSSFSheet sheet = (XSSFSheet)workbook.GetSheetAt(0);
//获取excel的第一个sheet
//获取Excel的最大行数
int rowsCount = sheet.PhysicalNumberOfRows; //为保证Table布局与Excel一样，这里应该取所有行中的最大列数（需要遍历整个Sheet）。
//为少一交全Excel遍历，提高性能，我们可以人为把第0行的列数调整至所有行中的最大列数。
int colsCount = sheet.GetRow(0).PhysicalNumberOfCells;
for (int i = 0; i < colsCount; i++)
{
table.Columns.Add(i.ToString());
}
for (int x = 0; x < rowsCount; x++)
{ DataRow dr = table.NewRow();
for (int y = 0; y < colsCount; y++)
{
var row = sheet.GetRow(x);
if (row != null)
{
var column = row.GetCell(y);
if (column != null)
{
dr[y] = sheet.GetRow(x).GetCell(y).ToString();
}
}
}
table.Rows.Add(dr);
}
sheet = null;
workbook = null;
}
return table;
}
导出
[Ajax] public AjaxResult ExportWithdrawExcel(int id) { bool ifSuccess = false; string msg = ""; string templatePath = Server.MapPath("\\Content\\template\\WithdrawInfo.xlsx"); string resultPath = ""; try { var entity = _withdrawRequestService.GetYstObjById(id); WithdrawRequestModel requestModel = entity.ToModel(); resultPath = "\\Content\\template\\" + requestModel.BillCode + "_" + DateTime.Now.Second + ".xlsx"; string savePath = Server.MapPath(resultPath); IWorkbook exportFile = new XSSFWorkbook(templatePath);
ISheet sheet1 = exportFile.GetSheet("相关提现订单"); var list = _withdrawOrderListService.GetWithdrawOrderListByWithdrawRequestId(requestModel.Id); var modelList = new List<WithdrawOrderListModel>(); foreach (var item in list) { var model = new WithdrawOrderListModel(); if (item != null) { model = item.ToModel(); } modelList.Add(model); } var gt = modelList.ToArray();
System.Data.DataTable dt = IListOut(modelList); int rowCount = dt.Rows.Count; int colCount = dt.Columns.Count; object[,] dataArray = new object[rowCount + 1, colCount]; for (int j = 0; j < rowCount; j++) { IRow row = sheet1.CreateRow(j + 12); for (int i = 0; i < colCount; i++) {
switch (dt.Columns[i].ColumnName) { case "EndDate": { row.CreateCell(0).SetCellValue(dt.Rows[j][i].ToString()); break; } case "UserName": { row.CreateCell(1).SetCellValue(dt.Rows[j][i].ToString()); break; } case "BankName": { row.CreateCell(2).SetCellValue(dt.Rows[j][i].ToString()); break; } case "OrgId": { row.CreateCell(3).SetCellValue(dt.Rows[j][i].ToString()); break; } case "CardNo": { row.CreateCell(4).SetCellValue(dt.Rows[j][i].ToString()); break; } case "Amount": { row.CreateCell(5).SetCellValue(dt.Rows[j][i].ToString()); break; } case "CreateDate": { row.CreateCell(6).SetCellValue(dt.Rows[j][i].ToString()); break; } case "WithdrawTypeShow": { row.CreateCell(7).SetCellValue(dt.Rows[j][i].ToString()); break; } case "OrderCode": { row.CreateCell(8).SetCellValue(dt.Rows[j][i].ToString()); break; } case "OrderTitle": { row.CreateCell(9).SetCellValue(dt.Rows[j][i].ToString()); break; } case "UserTypeShow": { row.CreateCell(10).SetCellValue(dt.Rows[j][i].ToString()); break; } case "UniqueCode": { row.CreateCell(11).SetCellValue(dt.Rows[j][i].ToString()); break; } } } } sheet1.GetRow(1).GetCell(1).SetCellValue(requestModel.BillCode.ToString()); sheet1.GetRow(2).GetCell(1).SetCellValue(requestModel.WithdrawTypeShow.ToString()); sheet1.GetRow(3).GetCell(1).SetCellValue(requestModel.Creator.ToString()); sheet1.GetRow(4).GetCell(1).SetCellValue(requestModel.SubmitMan.ToString()); sheet1.GetRow(5).GetCell(1).SetCellValue(requestModel.CheckMan.ToString()); sheet1.GetRow(6).GetCell(1).SetCellValue(requestModel.AuditMan.ToString()); sheet1.GetRow(7).GetCell(1).SetCellValue(requestModel.CheckMan.ToString()); sheet1.GetRow(6).GetCell(1).SetCellValue(requestModel.Remark.ToString()); sheet1.GetRow(1).GetCell(5).SetCellValue(requestModel.BillDate.ToString()); sheet1.GetRow(2).GetCell(5).SetCellValue(requestModel.BillAmount.ToString()); sheet1.GetRow(3).GetCell(5).SetCellValue(requestModel.CreatedOnUTC.ToString()); sheet1.GetRow(4).GetCell(5).SetCellValue(requestModel.SubmitDate.ToString()); sheet1.GetRow(5).GetCell(5).SetCellValue(requestModel.CheckDate.ToString()); sheet1.GetRow(6).GetCell(5).SetCellValue(requestModel.AuditDate.ToString());
FileStream sw = System.IO.File.Create(savePath); exportFile.Write(sw); sw.Close(); ifSuccess = true; } catch (Exception e) { msg = e.Message; if (e.InnerException != null) msg += e.InnerException.Message; } JsonSerializerSettings js = new JsonSerializerSettings(); js.ReferenceLoopHandling = ReferenceLoopHandling.Ignore; return new AjaxResult(ifSuccess, JsonConvert.SerializeObject(resultPath, Formatting.Indented, js), msg);
}
来源：https://www.cnblogs.com/liufei88866/p/3501493.html