518 lines
24 KiB
C#
518 lines
24 KiB
C#
using NPOI.HPSF;
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using NPOI.HSSF.UserModel;
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using NPOI.SS.UserModel;
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using NPOI.XSSF.UserModel;
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using System;
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using System.Collections.Generic;
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using System.Data;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace NPOITest
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{
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/// <summary>
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/// Execl工具辅助类
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/// </summary>
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public class ExeclHelper
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{
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/// <summary>
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/// 读取Execl数据到DataTable中
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/// </summary>
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/// <param name="filePath">指定Execl文件路径</param>
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/// <param name="isColumnName">设置第一行是否是列名</param>
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/// <returns>返回一个DataTable数据集</returns>
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public static DataTable ExcelToDataTable(string filePath, string sheetName, bool isColumnName)
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{
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DataTable dataTable = null;
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FileStream fs = null;
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DataColumn column = null;
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DataRow dataRow = null;
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IWorkbook workbook = null;
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ISheet sheet = null;
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IRow row = null;
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ICell cell = null;
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int startRow = 0;
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try
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{
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using (fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
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{
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// 2007版本
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if (filePath.IndexOf(".xlsx") > 0)
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workbook = new XSSFWorkbook(fs);
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// 2003版本
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else if (filePath.IndexOf(".xls") > 0)
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workbook = new HSSFWorkbook(fs);
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if (workbook != null)
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{
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sheet = workbook.GetSheet(sheetName);//读取第一个sheet，当然也可以循环读取每个sheet
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dataTable = new DataTable();
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if (sheet != null)
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{
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int rowCount = sheet.LastRowNum;//总行数
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if (rowCount > 0)
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{
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IRow firstRow = sheet.GetRow(0);//第一行
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int cellCount = firstRow.LastCellNum;//列数
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//构建datatable的列
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if (isColumnName)
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{
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startRow = 1;//如果第一行是列名，则从第二行开始读取
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for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
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{
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cell = firstRow.GetCell(i);
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if (cell != null)
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{
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if (cell.StringCellValue != null)
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{
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column = new DataColumn(cell.StringCellValue);
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dataTable.Columns.Add(column);
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}
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}
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}
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}
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else
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{
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for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
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{
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column = new DataColumn("column" + (i + 1));
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dataTable.Columns.Add(column);
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}
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}
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//填充行
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for (int i = startRow; i <= rowCount; ++i)
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{
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row = sheet.GetRow(i);
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if (row == null) continue;
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dataRow = dataTable.NewRow();
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for (int j = row.FirstCellNum; j < cellCount; ++j)
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{
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cell = row.GetCell(j);
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if (cell == null)
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{
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dataRow[j] = "";
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}
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else
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{
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//CellType(Unknown = -1,Numeric = 0,String = 1,Formula = 2,Blank = 3,Boolean = 4,Error = 5,)
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switch (cell.CellType)
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{
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case CellType.Blank:
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dataRow[j] = "";
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break;
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case CellType.Numeric:
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short format = cell.CellStyle.DataFormat;
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//对时间格式（2015.12.5、2015/12/5、2015-12-5等）的处理
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if (format == 14 || format == 31 || format == 57 || format == 58)
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dataRow[j] = cell.DateCellValue;
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else
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dataRow[j] = cell.NumericCellValue;
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break;
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case CellType.String:
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dataRow[j] = cell.StringCellValue;
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break;
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}
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}
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}
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dataTable.Rows.Add(dataRow);
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}
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}
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}
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}
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}
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return dataTable;
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}
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catch (Exception err)
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{
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if (fs != null)
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{
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fs.Close();
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}
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return null;
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}
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}
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public static DataTable ExcelToDataTable(string filePath,int sheetIndex, bool isColumnName)
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{
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DataTable dataTable = null;
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FileStream fs = null;
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DataColumn column = null;
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DataRow dataRow = null;
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IWorkbook workbook = null;
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ISheet sheet = null;
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IRow row = null;
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ICell cell = null;
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int startRow = 0;
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try
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{
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using (fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
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{
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// 2007版本
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if (filePath.IndexOf(".xlsx") > 0)
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workbook = new XSSFWorkbook(fs);
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// 2003版本
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else if (filePath.IndexOf(".xls") > 0)
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workbook = new HSSFWorkbook(fs);
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if (workbook != null)
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{
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sheet = workbook.GetSheetAt(sheetIndex);//读取第一个sheet，当然也可以循环读取每个sheet
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dataTable = new DataTable();
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if (sheet != null)
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{
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int rowCount = sheet.LastRowNum;//总行数
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if (rowCount > 0)
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{
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IRow firstRow = sheet.GetRow(0);//第一行
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int cellCount = firstRow.LastCellNum;//列数
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//构建datatable的列
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if (isColumnName)
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{
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startRow = 1;//如果第一行是列名，则从第二行开始读取
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for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
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{
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cell = firstRow.GetCell(i);
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if (cell != null)
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{
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if (cell.StringCellValue != null)
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{
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column = new DataColumn(cell.StringCellValue);
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dataTable.Columns.Add(column);
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}
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}
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}
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}
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else
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{
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for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
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{
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column = new DataColumn("column" + (i + 1));
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dataTable.Columns.Add(column);
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}
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}
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//填充行
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for (int i = startRow; i <= rowCount; ++i)
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{
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row = sheet.GetRow(i);
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if (row == null) continue;
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dataRow = dataTable.NewRow();
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for (int j = row.FirstCellNum; j < cellCount; ++j)
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{
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cell = row.GetCell(j);
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if (cell == null)
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{
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dataRow[j] = "";
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}
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else
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{
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//CellType(Unknown = -1,Numeric = 0,String = 1,Formula = 2,Blank = 3,Boolean = 4,Error = 5,)
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switch (cell.CellType)
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{
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case CellType.Blank:
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dataRow[j] = "";
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break;
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case CellType.Numeric:
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short format = cell.CellStyle.DataFormat;
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//对时间格式（2015.12.5、2015/12/5、2015-12-5等）的处理
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if (format == 14 || format == 31 || format == 57 || format == 58 || format == 22)
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dataRow[j] = cell.DateCellValue;
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else
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dataRow[j] = cell.NumericCellValue;
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break;
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case CellType.String:
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dataRow[j] = cell.StringCellValue;
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break;
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}
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}
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}
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dataTable.Rows.Add(dataRow);
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}
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}
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}
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}
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}
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return dataTable;
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}
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catch (Exception)
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{
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if (fs != null)
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{
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fs.Close();
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}
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return null;
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}
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}
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/// <summary>
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/// 将DataTable导出到Execl文档
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/// </summary>
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/// <param name="dt">传入一个DataTable数据集</param>
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/// <returns>返回一个Bool类型的值，表示是否导出成功</returns>
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/// True表示导出成功，Flase表示导出失败
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public static bool DataTableToExcel(DataTable dt, string sheetName, string Outpath)
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{
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bool result = false;
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IWorkbook workbook = null;
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FileStream fs = null;
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IRow row = null;
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ISheet sheet = null;
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ICell cell = null;
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try
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{
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if (dt != null && dt.Rows.Count > 0)
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{
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workbook = new HSSFWorkbook();
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sheet = workbook.CreateSheet(sheetName);//创建一个名称为Sheet0的表
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int rowCount = dt.Rows.Count;//行数
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int columnCount = dt.Columns.Count;//列数
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//设置列头
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row = sheet.CreateRow(0);//excel第一行设为列头
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for (int c = 0; c < columnCount; c++)
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{
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cell = row.CreateCell(c);
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cell.SetCellValue(dt.Columns[c].ColumnName);
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}
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//设置每行每列的单元格,
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for (int i = 0; i < rowCount; i++)
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{
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row = sheet.CreateRow(i + 1);
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for (int j = 0; j < columnCount; j++)
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{
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cell = row.CreateCell(j);//excel第二行开始写入数据
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cell.SetCellValue(dt.Rows[i][j].ToString());
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}
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}
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//向outPath输出数据
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using (fs = File.OpenWrite(Outpath))
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{
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workbook.Write(fs);//向打开的这个xls文件中写入数据
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result = true;
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}
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}
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return result;
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}
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catch (Exception ex)
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{
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if (fs != null)
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{
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fs.Close();
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}
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return false;
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}
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}
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/// <summary>
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/// 读取Execl数据到DataTable(DataSet)中
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/// </summary>
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/// <param name="filePath">指定Execl文件路径</param>
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/// <param name="isFirstLineColumnName">设置第一行是否是列名</param>
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/// <returns>返回一个DataTable数据集</returns>
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public static DataSet ExcelToDataSet(string filePath, bool isFirstLineColumnName)
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{
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DataSet dataSet = new DataSet();
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int startRow = 0;
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try
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{
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using (FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
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{
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IWorkbook workbook = null;
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// 如果是2007+的Excel版本
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if (filePath.IndexOf(".xlsx") > 0)
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{
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workbook = new XSSFWorkbook(fs);
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}
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// 如果是2003-的Excel版本
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else if (filePath.IndexOf(".xls") > 0)
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{
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workbook = new HSSFWorkbook(fs);
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}
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if (workbook != null)
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{
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//循环读取Excel的每个sheet，每个sheet页都转换为一个DataTable，并放在DataSet中
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for (int p = 0; p < workbook.NumberOfSheets; p++)
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{
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ISheet sheet = workbook.GetSheetAt(p);
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DataTable dataTable = new DataTable();
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dataTable.TableName = sheet.SheetName;
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if (sheet != null)
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{
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int rowCount = sheet.LastRowNum;//获取总行数
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if (rowCount > 0)
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{
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IRow firstRow = sheet.GetRow(0);//获取第一行
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int cellCount = firstRow.LastCellNum;//获取总列数
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//构建datatable的列
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if (isFirstLineColumnName)
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{
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startRow = 1;//如果第一行是列名，则从第二行开始读取
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for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
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{
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ICell cell = firstRow.GetCell(i);
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if (cell != null)
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{
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if (cell.StringCellValue != null)
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{
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DataColumn column = new DataColumn(cell.StringCellValue);
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dataTable.Columns.Add(column);
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}
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}
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}
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}
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else
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{
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for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
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{
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DataColumn column = new DataColumn("column" + (i + 1));
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dataTable.Columns.Add(column);
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}
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}
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//填充行
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for (int i = startRow; i <= rowCount; ++i)
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{
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IRow row = sheet.GetRow(i);
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if (row == null) continue;
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DataRow dataRow = dataTable.NewRow();
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for (int j = row.FirstCellNum; j < cellCount; ++j)
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{
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ICell cell = row.GetCell(j);
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if (cell == null)
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{
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dataRow[j] = "";
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}
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else
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{
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//CellType(Unknown = -1,Numeric = 0,String = 1,Formula = 2,Blank = 3,Boolean = 4,Error = 5,)
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switch (cell.CellType)
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{
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case CellType.Blank:
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dataRow[j] = "";
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break;
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case CellType.Numeric:
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short format = cell.CellStyle.DataFormat;
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//对时间格式（2015.12.5、2015/12/5、2015-12-5等）的处理
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if (format == 14 || format == 31 || format == 57 || format == 58)
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dataRow[j] = cell.DateCellValue;
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else
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dataRow[j] = cell.NumericCellValue;
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break;
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case CellType.String:
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dataRow[j] = cell.StringCellValue;
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break;
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}
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}
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}
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dataTable.Rows.Add(dataRow);
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}
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}
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}
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dataSet.Tables.Add(dataTable);
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}
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}
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}
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return dataSet;
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}
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catch (Exception err)
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{
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return null;
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}
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}
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/// <summary>
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/// 将DataTable(DataSet)导出到Execl文档
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/// </summary>
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/// <param name="dataSet">传入一个DataSet</param>
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/// <param name="Outpath">导出路径（可以不加扩展名，不加默认为.xls）</param>
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/// <returns>返回一个Bool类型的值，表示是否导出成功</returns>
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/// True表示导出成功，Flase表示导出失败
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public static bool DataSetToExcel(DataSet dataSet, string Outpath)
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{
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bool result = false;
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try
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{
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if (dataSet == null || dataSet.Tables == null || dataSet.Tables.Count == 0 || string.IsNullOrEmpty(Outpath))
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throw new Exception("输入的DataSet或路径异常");
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int sheetIndex = 0;
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//根据输出路径的扩展名判断workbook的实例类型
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IWorkbook workbook = null;
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string pathExtensionName = Outpath.Trim().Substring(Outpath.Length - 5);
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if (pathExtensionName.Contains(".xlsx"))
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{
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workbook = new XSSFWorkbook();
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}
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else if (pathExtensionName.Contains(".xls"))
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{
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workbook = new HSSFWorkbook();
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}
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else
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{
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Outpath = Outpath.Trim() + ".xls";
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workbook = new HSSFWorkbook();
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}
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//将DataSet导出为Excel
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foreach (DataTable dt in dataSet.Tables)
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{
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sheetIndex++;
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if (dt != null && dt.Rows.Count > 0)
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{
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ISheet sheet = workbook.CreateSheet(string.IsNullOrEmpty(dt.TableName) ? ("sheet" + sheetIndex) : dt.TableName);//创建一个名称为Sheet0的表
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int rowCount = dt.Rows.Count;//行数
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int columnCount = dt.Columns.Count;//列数
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//设置列头
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IRow row = sheet.CreateRow(0);//excel第一行设为列头
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for (int c = 0; c < columnCount; c++)
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{
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ICell cell = row.CreateCell(c);
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cell.SetCellValue(dt.Columns[c].ColumnName);
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}
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//设置每行每列的单元格,
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for (int i = 0; i < rowCount; i++)
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{
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row = sheet.CreateRow(i + 1);
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for (int j = 0; j < columnCount; j++)
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{
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ICell cell = row.CreateCell(j);//excel第二行开始写入数据
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cell.SetCellValue(dt.Rows[i][j].ToString());
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}
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}
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}
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}
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//向outPath输出数据
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using (FileStream fs = File.OpenWrite(Outpath))
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{
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workbook.Write(fs);//向打开的这个xls文件中写入数据
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result = true;
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}
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return result;
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}
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catch (Exception ex)
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{
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return false;
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}
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}
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}
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}
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