NPOI ADO office wps 四种方式 读excel表格
2024-04-20 19:14:58
有的客户装了不同的excel程序，所以做了四种excel文件的读写，在一定程度上可以适应各种情况的客户。
npoi ：对公式，某些日期兼容的不好，速度很快，不需要装excel程序
ado:：对某些日期格式兼容的不好，速度较快
office：支持office2013
wps：支持wps2016
测试：在wps与excel都安装的情况下，调用 wps sdk时，有些打开确是excel进程
源代码下载地址：http://download.csdn.net/detail/liangzhonglin/9546566
wps
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Data;
using System.Runtime.InteropServices;
using System.Diagnostics;
using Excel;namespace ExcelLib
{public class CExcel{public string Error = "";[DllImport("User32.dll", CharSet = CharSet.Auto)]public static extern int GetWindowThreadProcessId(IntPtr hwnd, out int ID);/// <summary>/// 强制关闭当前Excel进程/// </summary>public static void Kill(IntPtr intPtr){try{Process[] ps = Process.GetProcesses();int ExcelID = 0;GetWindowThreadProcessId(intPtr, out ExcelID); //得到本进程唯一标志k foreach (Process p in ps){string procName = p.ProcessName.ToLower();if (procName.Equals("excel")|| procName.Equals("et")){if (p.Id == ExcelID){p.Kill();}}}}catch{//不做任何处理 }}public bool DatatableToExcel(ref System.Data.DataTable dtExcel, string excelPath){Error = "不支持此接口!";return false;}#region 读取excel文件public bool ReadExcelToDataTable(string excelPath, string sheetName, string tableName, string fieldNameList, out System.Data.DataTable dtExcel){Application objApp = null;Workbook objWorkBook = null;Worksheet objWorkSheet = null;IntPtr wpsPtr = IntPtr.Zero;dtExcel = null;try{//获取工作表表格object type = System.Reflection.Missing.Value;objApp = new Application();objApp.Visible = false;objApp.ScreenUpdating = false;objApp.DisplayAlerts = false;objWorkBook = (Workbook)objApp.Workbooks.Open(excelPath, type, type, type, type, type, type, type, type, type, type, type, type, type, type);if (objApp.Workbooks.Count == 0){throw new Exception("excel文件中没有sheet表");}wpsPtr = new IntPtr(objApp.Hwnd);//获得指定表if (sheetName.Length == 0){objWorkSheet = (Worksheet)objWorkBook.Worksheets.get_Item(1);}else{objWorkSheet = (Worksheet)objWorkBook.Worksheets.get_Item(sheetName);}//取表名赋值到dt TableNamedtExcel = new System.Data.DataTable(tableName);//获取数据区域int row = objWorkSheet.UsedRange.Rows.Count;int col = objWorkSheet.UsedRange.Columns.Count;int recordIndex = 1;if (fieldNameList.Length > 0){string[] fieldList = fieldNameList.Split(',');for (int i = 0; i < fieldList.Length; i++){dtExcel.Columns.Add(fieldList[i]);}}else{for (int c = 1; c <= col; c++){dtExcel.Columns.Add(new DataColumn((String)((Excel.Range)objWorkSheet.Cells[1, c]).Text));}recordIndex = 2;}for (int r = recordIndex; r <= row; r++){DataRow newRow = dtExcel.NewRow();for (int c = 1; c <= col; c++){newRow[c - 1] = ((Excel.Range)objWorkSheet.Cells[r, c]).Text;}dtExcel.Rows.Add(newRow);}return true;}catch (Exception ex){Error = "读取excel失败:" + ex.Message;return false;}finally{if (objWorkBook != null){objWorkBook.Close(true, null, null);objWorkBook = null;}if (objApp != null){objApp.Quit();objApp = null;}// 杀死WPS线程try{if (wpsPtr != IntPtr.Zero){Kill(wpsPtr);}}catch (Exception){ }System.GC.Collect();GC.WaitForPendingFinalizers();}}public bool ReadExcelToDataTable(string excelPath, string sheetName, string tableName, int getMaxRecord, out System.Data.DataTable dtExcel){dtExcel = null;Error = "不支持此接口!";return false;}#endregion}
}
office
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Data;
using System.Data.OleDb;
using System.Runtime.InteropServices;
using System.Diagnostics;namespace ExcelLib
{public class CExcel{public string Error = "";[DllImport("User32.dll", CharSet = CharSet.Auto)]public static extern int GetWindowThreadProcessId(IntPtr hwnd, out int ID);/// <summary>/// 强制关闭当前Excel进程/// </summary>public static void Kill(IntPtr intPtr){try{Process[] ps = Process.GetProcesses();int ExcelID = 0;GetWindowThreadProcessId(intPtr, out ExcelID); //得到本进程唯一标志k foreach (Process p in ps){string procName = p.ProcessName.ToLower();if (procName.Equals("excel") || procName.Equals("et")){if (p.Id == ExcelID){p.Kill();}}}}catch{//不做任何处理 }}public bool DatatableToExcel(ref DataTable dtExcel, string excelPath){Error = "不支持此接口!";return false;}#region 读取excel文件public bool ReadExcelToDataTable(string excelPath, string sheetName, string tableName, string fieldNameList, out DataTable dtExcel){Microsoft.Office.Interop.Excel.ApplicationClass excel = null;dtExcel = null;IntPtr excelPtr = IntPtr.Zero;try{excel = new Microsoft.Office.Interop.Excel.ApplicationClass();excelPtr = new IntPtr(excel.Hwnd);excel.Visible = false;excel.ScreenUpdating = false;excel.DisplayAlerts = false;excel.Workbooks.Add(excelPath);if (excel.Workbooks.Count == 0){throw new Exception("excel文件中没有sheet表");}//获得指定表Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)excel.Worksheets[1];//取表名赋值到dt TableNamedtExcel = new System.Data.DataTable(worksheet.Name);worksheet.Columns.EntireColumn.AutoFit();int row = worksheet.UsedRange.Rows.Count;int col = worksheet.UsedRange.Columns.Count;for (int c = 1; c <= col; c++){dtExcel.Columns.Add(new DataColumn((String)((Microsoft.Office.Interop.Excel.Range)worksheet.Cells[1, c]).Text));}for (int r = 2; r <= row; r++){DataRow newRow = dtExcel.NewRow();for (int c = 1; c <= col; c++){newRow[c - 1] = ((Microsoft.Office.Interop.Excel.Range)worksheet.Cells[r, c]).Text;}dtExcel.Rows.Add(newRow);}worksheet = null;return true;}catch (Exception ex){Error = "读取excel失败:" + ex.Message;return false;}finally{if (excel != null){excel.Quit();excel = null;}// 杀死excel线程try{if ( excelPtr!= IntPtr.Zero){Kill(excelPtr);}}catch (Exception){ }System.GC.Collect();}}public bool ReadExcelToDataTable(string excelPath, string sheetName, string tableName, int getMaxRecord, out DataTable dtExcel){dtExcel = null;Error = "不支持此接口!";return false;}#endregion}
}
ado
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Data;
using System.Data.OleDb;namespace ExcelLib
{public class CExcel{public string Error = "";public bool DatatableToExcel(ref DataTable dtExcel, string excelPath){Error = "不支持此接口!";return false;}#region 读取excel文件public bool ReadExcelToDataTable(string excelPath, string sheetName, string tableName, string fieldNameList, out DataTable dtExcel){dtExcel = null;OleDbConnection conn = null;try{string defaultSheetName = sheetName; // "[Sheet1$]";string strConn = string.Format("Provider=Microsoft.Ace.OleDb.12.0;Data Source={0};Extended Properties='Excel 12.0;HDR=Yes'", excelPath);// string strConn = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties='Excel 8.0;HDR=Yes'", excelPath);if (sheetName.Length == 0){// 取默认的sheet表名conn = new OleDbConnection(strConn);conn.Open();System.Data.DataTable sheetNames = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });conn.Close();conn = null;defaultSheetName = sheetNames.Rows[0]["TABLE_NAME"].ToString();}DataSet ds = new DataSet();string sqlTabel = string.Format("select * from [{0}]", defaultSheetName);OleDbDataAdapter oada = new OleDbDataAdapter(sqlTabel, strConn);oada.Fill(ds);dtExcel = ds.Tables[0];dtExcel.TableName = tableName;if (fieldNameList.Length > 0){string[] fieldList = fieldNameList.Split(',');for (int i = 0; i < dtExcel.Columns.Count; i++){dtExcel.Columns[i].ColumnName = fieldList[i];}}return true;}catch (Exception ex){Error = "读取excel失败:" + ex.Message;return false;}finally{if (conn != null){conn.Close();conn = null;}}}public bool ReadExcelToDataTable(string excelPath, string sheetName, string tableName, int getMaxRecord, out DataTable dtExcel){dtExcel = null;Error = "不支持此接口!";return false;}#endregion}
}
npoi
using System;
using System.Collections.Generic;
using System.Text;
using NPOI.HSSF.UserModel;
using NPOI.HPSF;
using NPOI.POIFS.FileSystem;
using System.IO;
using System.Data;
using NPOI;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;namespace ExcelLib
{public class CExcel{public string Error = "";#region 生成excelprivate CellType GetCellType(string type){CellType cell = CellType.String;if (type == "System.Double"){cell = CellType.Numeric;}return cell;}public bool DatatableToExcel(ref DataTable dtExcel, string excelPath){try{if (excelPath == null){throw new Exception("未指定生成路径");}bool bResult = true;string ext = Path.GetExtension(excelPath);switch (ext.ToLower()){case ".xls":bResult= DatatableToExcel2003(ref dtExcel, excelPath);break;case ".xlsx":bResult= DatatableToExcel2007(ref dtExcel, excelPath);break;default:throw new Exception("保存文件名不正确");}return bResult;}catch (System.Exception ex){Error = "生成excel失败" + ex.Message;return false;}}private bool DatatableToExcel2007(ref DataTable dtExcel, string excelPath){try{XSSFWorkbook workbook = new XSSFWorkbook();create a entry of DocumentSummaryInformation//DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();//dsi.Company = "Partner";//hssfworkbook..DocumentSummaryInformation = dsi;create a entry of SummaryInformation//SummaryInformation si = PropertySetFactory.CreateSummaryInformation();//si.Subject = "FrontLink";//hssfworkbook.SummaryInformation = si;//here, we must insert at least one sheet to the workbook. otherwise, Excel will say 'data lost in file'//So we insert three sheet just like what Excel doesISheet sheet = workbook.CreateSheet(dtExcel.TableName);int cellCount = dtExcel.Columns.Count;IRow column = sheet.CreateRow(0);for (int j = 0; j < cellCount; j++){column.CreateCell(j).SetCellType(GetCellType(dtExcel.Columns[j].DataType.ToString()));column.CreateCell(j).SetCellValue(dtExcel.Columns[j].ColumnName);}for (int i = 0; i < dtExcel.Rows.Count; i++){IRow row = sheet.CreateRow(i + 1);for (int j = 0; j < cellCount; j++){row.CreateCell(j).SetCellType(GetCellType(dtExcel.Columns[j].DataType.ToString()));row.CreateCell(j).SetCellValue(dtExcel.Rows[i][j].ToString());}}for (int i = 0; i < dtExcel.Columns.Count; i++){// sheet.AutoSizeColumn(i, false);// 此方法导致内存占用100%,导出速度慢sheet.SetColumnWidth(i, 9000);}//Write the stream data of workbook to the root directoryFileStream file = new FileStream(excelPath, FileMode.Create);workbook.Write(file);file.Close();return true;}catch (System.Exception ex){Error = "生成Excel失败:" + ex.Message;return false;}}private bool DatatableToExcel2003(ref DataTable dtExcel, string excelPath){try{HSSFWorkbook workbook = new HSSFWorkbook();//create a entry of DocumentSummaryInformationDocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();dsi.Company = "Partner";workbook.DocumentSummaryInformation = dsi;//create a entry of SummaryInformationSummaryInformation si = PropertySetFactory.CreateSummaryInformation();si.Subject = "FrontLink";workbook.SummaryInformation = si;//here, we must insert at least one sheet to the workbook. otherwise, Excel will say 'data lost in file'//So we insert three sheet just like what Excel doesISheet sheet = workbook.CreateSheet(dtExcel.TableName);int cellCount = dtExcel.Columns.Count;IRow column = sheet.CreateRow(0);for (int j = 0; j < cellCount; j++){column.CreateCell(j).SetCellType(GetCellType(dtExcel.Columns[j].DataType.ToString()));column.CreateCell(j).SetCellValue(dtExcel.Columns[j].ColumnName);}for (int i = 0; i < dtExcel.Rows.Count; i++){IRow row = sheet.CreateRow(i + 1);for (int j = 0; j < cellCount; j++){row.CreateCell(j).SetCellType(GetCellType(dtExcel.Columns[j].DataType.ToString()));row.CreateCell(j).SetCellValue(dtExcel.Rows[i][j].ToString());}}for (int i = 0; i < dtExcel.Columns.Count; i++){//sheet.AutoSizeColumn(i, false); // 此方法导致内存占用100%,导出速度慢sheet.SetColumnWidth(i, 9000);}//Write the stream data of workbook to the root directoryFileStream file = new FileStream(excelPath, FileMode.Create);workbook.Write(file);file.Close();return true;}catch (System.Exception ex){Error = "生成Excel失败:" + ex.Message;return false;}}#endregion#region 读取excel文件/// <summary>/// 读取单元格的数据，并转化成字符串值/// </summary>/// <param name="cell"></param>/// <returns></returns>private string GetCellValue(ICell cell){string value = "";if (cell != null){string format = cell.CellStyle.GetDataFormatString();switch (cell.CellType){case CellType.String:value = cell.StringCellValue;break;case CellType.Numeric:if (format != null && (format.IndexOf("m") > 0 || format.IndexOf("d") > 0)){if (format == "m/d/yy"){DateTime dt=cell.DateCellValue;value = dt.ToString("yyyy-MM-dd");}else{//DateTime dt = DateTime.FromOADate(cell.NumericCellValue);value = cell.ToString();}}else{value = cell.NumericCellValue.ToString();}break;case CellType.Boolean:value = cell.BooleanCellValue.ToString();break;case CellType.Formula:value = cell.CellFormula;break;case CellType.Blank:value = "";break;default:break;}}return value;}/// <summary>/// 读取Excel文件内容到表里/// </summary>/// <param name="excelPath"></param>/// <param name="sheetName"></param>/// <param name="tableName"></param>/// <param name="fieldNameList">fieldNameList有值，为指定的字段，为“”；取excel的第一行做为列值；为null，取excel的列名</param>/// <param name="getMaxRecord">取值范围：-1取全部的值；>0取指定的值</param>/// <param name="dtExcel"></param>/// <returns></returns>private bool LocalReadExcelToDataTable(string excelPath, string sheetName, string tableName, string fieldNameList, int getMaxRecord, out DataTable dtExcel){dtExcel = new DataTable(tableName);FileStream file = null;try{sheetName = sheetName.Trim();file = new FileStream(excelPath, FileMode.Open);IWorkbook workbook = WorkbookFactory.Create(file);//HSSFWorkbook workbook = new HSSFWorkbook(file);//创建工作簿对象NPOI.SS.UserModel.ISheet sheet = null;if (sheetName.Length == 0){sheet = workbook.GetSheetAt(0);}else{sheet = workbook.GetSheet(sheetName);}int sheetHaveHeader = 0;int cellCount = 0;//创建表标题if (fieldNameList == null){NPOI.SS.UserModel.IRow headerRow = sheet.GetRow(0);cellCount = headerRow.LastCellNum;//读取并生成标题行，这里能成功执行for (int i = headerRow.FirstCellNum; i < cellCount; i++){DataColumn column = new DataColumn(i.ToString());dtExcel.Columns.Add(column);}}else if (fieldNameList.Trim().Length > 0){string[] fieldList = fieldNameList.Split(',');foreach (string field in fieldList){dtExcel.Columns.Add(new DataColumn(field.Trim()));}cellCount = fieldList.Length;sheetHaveHeader = 1;}else{sheetHaveHeader = 1;NPOI.SS.UserModel.IRow headerRow = sheet.GetRow(0);cellCount = headerRow.LastCellNum;//读取并生成标题行，这里能成功执行for (int i = headerRow.FirstCellNum; i < cellCount; i++){DataColumn column = new DataColumn(GetCellValue(headerRow.GetCell(i, MissingCellPolicy.RETURN_BLANK_AS_NULL)));dtExcel.Columns.Add(column);}}bool bFilter = getMaxRecord >= 0;//逐个读取单元格，这里就不能正确读取到 for (int i = (sheet.FirstRowNum + sheetHaveHeader); i <= sheet.LastRowNum; i++){if (bFilter){// 只取指定的记录数if (dtExcel.Rows.Count >= getMaxRecord){break;}}NPOI.SS.UserModel.IRow row = sheet.GetRow(i);DataRow dataRow = dtExcel.NewRow();for (int j = row.FirstCellNum; j < cellCount; j++){dataRow[j] = GetCellValue(row.GetCell(j, MissingCellPolicy.RETURN_BLANK_AS_NULL)).Replace("'", "’");}dtExcel.Rows.Add(dataRow);}//for (int i = 0; i < dtExcel.Columns.Count; i++)//{// // sheet.AutoSizeColumn(i, false); // 此方法导致内存占用100%,导出速度慢// sheet.SetColumnWidth(i, 9000);//}workbook = null;sheet = null;return true;}catch (System.Exception ex){Error = "读取Excel失败:" + ex.Message;return false;}finally{if (file != null){file.Close();}}}public bool ReadExcelToDataTable(string excelPath, string sheetName, string tableName, string fieldNameList, out DataTable dtExcel){return LocalReadExcelToDataTable(excelPath, sheetName, tableName, fieldNameList, -1, out dtExcel);}public bool ReadExcelToDataTable(string excelPath, string sheetName, string tableName, int getMaxRecord, out DataTable dtExcel){return LocalReadExcelToDataTable(excelPath, sheetName, tableName, null, getMaxRecord, out dtExcel);}#endregion}
}
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