c 网站开发案例详解,h5商城网站怎么建设,wordpress google主题,建筑新型模板一个简易的控制台程序#xff0c;使用C#NPOI进行Excel处理#xff0c;实现多个Excel文件的求和统计。 前提#xff1a; 待统计的Excel格式相同统计结果表与待统计的表格格式一致 引入如下四个动态库#xff1a; 1. NPOI.dll 2. NPOI.OOXML.dll 3. NPOI.OpenXml4Net.dll …一个简易的控制台程序使用C#NPOI进行Excel处理实现多个Excel文件的求和统计。 前提 待统计的Excel格式相同统计结果表与待统计的表格格式一致 引入如下四个动态库 1. NPOI.dll 2. NPOI.OOXML.dll 3. NPOI.OpenXml4Net.dll 4. NPOI.OpenXmlFormats.dll
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using System;
using System.Collections.Generic;
using System.IO;namespace excelMergeCal
{class Program{static String BaseDIir d:\\docs;static String ResultFile d:\\result.xlsx;static int startRow 5;static int endRow 72;static int startColumn 3;static int endColumn 67;static ListCellWithPos AllCells new ListCellWithPos();static void Main(string[] args){Console.WriteLine(********************************************************************************);Console.ForegroundColor ConsoleColor.Red;Console.WriteLine(* 1.将待处理的Excel放在D盘的docs文件夹下****************************************);Console.WriteLine(* 2.将待处理的一个文件的全部数据单元格清空后放在D盘根目录下命名为result.xlsx *);Console.WriteLine(* 3.关闭打开的excel文件 ********************************************************);Console.WriteLine(* 4.按下回车键(Enter)开始*******************************************************);Console.ForegroundColor ConsoleColor.White;Console.WriteLine(********************************************************************************);Console.ForegroundColor ConsoleColor.Green;Console.WriteLine(等待按下回车键(Enter)开始...);Console.ForegroundColor ConsoleColor.White;Console.ReadLine();ReadAllExcel();Console.ForegroundColor ConsoleColor.Green;Console.WriteLine(处理完成按回车键(Enter)关闭.);Console.ReadLine();}static void ReadAllExcel(){string[] files Directory.GetFiles(BaseDIir, *.*, SearchOption.AllDirectories);foreach (string file in files){Console.WriteLine(正在处理文件 file);if (!file.EndsWith(xlsx) !file.EndsWith(xls)){Console.WriteLine(文件 file 不是xlsx/xls后缀已忽略.....);continue;}ReadExcel(file);// 处理每个文件}WriteResult();}static CellWithPos Get(int row, int col){for (int i 0; i AllCells.Count; i){if (AllCells[i].row row AllCells[i].column col)return AllCells[i];}return null;}public static void WriteResult(){String path ResultFile;string extension System.IO.Path.GetExtension(path);// 第一步读取文件流NPOI.SS.UserModel.IWorkbook workbook;using (FileStream stream new FileStream(path, FileMode.Open, FileAccess.Read)){if (extension.Equals(.xls)){workbook new HSSFWorkbook(stream);}else{workbook new XSSFWorkbook(stream);}#region 读取第一个sheet页面ISheet sheet workbook.GetSheetAt(0);//第一个sheet页列表int rowCount sheet.LastRowNum;IRow row sheet.GetRow(0); //读取当前行数据for (int i startRow; i sheet.LastRowNum i endRow; i){row sheet.GetRow(i); //读取当前行数据if (row null) continue;//Console.WriteLine(row.GetCell(1).ToString());for (int j startColumn; j row.Cells.Count j endColumn; j){ICell cell row.GetCell(j);CellWithPos cp Get(i, j);if (cp ! null){cell.SetCellValue(cp.value);}}}#endregion}// 第三步写入文件流using (FileStream stream new FileStream(path, FileMode.Create, FileAccess.Write)){workbook.Write(stream);workbook.Close();}}public static void ReadExcel(string path){try{IWorkbook wk null;string extension System.IO.Path.GetExtension(path);FileStream fs File.OpenRead(path);if (extension.Equals(.xls)){//把xls文件中的数据写入wk中wk new HSSFWorkbook(fs);}else{//把xlsx文件中的数据写入wk中wk new XSSFWorkbook(fs);}fs.Close();int sheetCount wk.NumberOfSheets;//获取sheet的数量ISheet sheet wk.GetSheetAt(0);//第一个sheet页列表int rowCount sheet.LastRowNum;IRow row sheet.GetRow(0); //读取当前行数据#region 读取第一个sheet页面for (int i startRow; i sheet.LastRowNum i endRow; i){row sheet.GetRow(i); //读取当前行数据if (row null) continue;//Console.WriteLine(row.GetCell(1).ToString());for (int j startColumn; j row.Cells.Count j endColumn; j){ICell cell row.GetCell(j);double val 0;if (cell.CellType CellType.Formula){val cell.NumericCellValue;}else if (cell.CellType CellType.Numeric){val cell.NumericCellValue;}else if (cell.CellType CellType.String || cell.CellType CellType.Blank){Double.TryParse(cell.StringCellValue, out val);}else{Console.WriteLine(單元格格式錯誤 i , j);Console.WriteLine(單元格的值 i , j : val);}CellWithPos cp Get(i, j);if (cp ! null){cp.value val;}else{AllCells.Add(new CellWithPos() { row i, column j, value val });}}}#endregion}catch (Exception ex){Console.WriteLine(ex.Message);}}class CellWithPos{public int row;public int column;public double value 0;}}
}
