700字范文 > [Asp.net]常见数据导入Excel Excel数据导入数据库解决方案总有一款适合你！

[Asp.net]常见数据导入Excel Excel数据导入数据库解决方案总有一款适合你！

时间：2022-11-23 06:37:16

引言

项目中常用到将数据导入Excel，将Excel中的数据导入数据库的功能，曾经也查找过相关的内容，将曾经用过的方案总结一下。

方案一

NPOI

NPOI 是 POI 项目的 .NET 版本。POI是一个开源的Java读写Excel、WORD等微软OLE2组件文档的项目。

使用 NPOI 你就可以在没有安装 Office 或者相应环境的机器上对 WORD/EXCEL 文档进行读写。NPOI是构建在POI 3.x版本之上的，它可以在没有安装Office的情况下对Word/Excel文档进行读写操作。

优势

（一）传统操作Excel遇到的问题：

1、如果是.NET，需要在服务器端装Office，且及时更新它，以防漏洞，还需要设定权限允许.NET访问COM+，如果在导出过程中出问题可能导致服务器宕机。

2、Excel会把只包含数字的列进行类型转换，本来是文本型的，Excel会将其转成数值型的，比如编号000123会变成123。

3、导出时，如果字段内容以“-”或“=”开头，Excel会把它当成公式进行，会报错。

4、Excel会根据Excel文件前8行分析数据类型，如果正好你前8行某一列只是数字，那它会认为该列为数值型，自动将该列转变成类似1.42702E+17格式，日期列变成包含日期和数字的。

（二）使用NPOI的优势

1、您可以完全免费使用该框架

2、包含了大部分EXCEL的特性(单元格样式、数据格式、公式等等)

3、专业的技术支持服务(24*7全天候) (非免费)

4、支持处理的文件格式包括xls, xlsx, docx.

5、采用面向接口的设计架构( 可以查看 NPOI.SS 的命名空间)

6、同时支持文件的导入和导出

7、基于.net 2.0 也支持xlsx 和 docx格式(当然也支持.net 4.0)

8、来自全世界大量成功且真实的测试Cases

9、大量的实例代码

11、你不需要在服务器上安装微软的Office，可以避免版权问题。

12、使用起来比Office PIA的API更加方便，更人性化。

13、你不用去花大力气维护NPOI，NPOI Team会不断更新、改善NPOI，绝对省成本。

NPOI之所以强大，并不是因为它支持导出Excel，而是因为它支持导入Excel，并能“理解”OLE2文档结构，这也是其他一些Excel读写库比较弱的方面。通常，读入并理解结构远比导出来得复杂，因为导入你必须假设一切情况都是可能的，而生成你只要保证满足你自己需求就可以了，如果把导入需求和生成需求比做两个集合，那么生成需求通常都是导入需求的子集，这一规律不仅体现在Excel读写库中，也体现在pdf读写库中，目前市面上大部分的pdf库仅支持生成，不支持导入。

构成

NPOI 1.2.x主要由POIFS、DDF、HPSF、HSSF、SS、Util六部分组成。

NPOI组成部分NPOI 1.x的最新版为NPOI 1.2.5，其中包括了以下功能： 1、读写OLE2文档 2、读写DocummentSummaryInformation和SummaryInformation3、基于LittleEndian的字节读写 4、读写Excel BIFF格式 5、识别并读写Excel BIFF中的常见Record，如RowRecord, StyleRecord, ExtendedFormatRecord6、支持设置单元格的高、宽、样式等 7、支持调用部分Excel内建函数，比如说sum, countif以及计算符号 8、支持在生成的XLS内嵌入打印设置，比如说横向/纵向打印、缩放、使用的纸张等。 NPOI 2.0主要由SS, HPSF, DDF, HSSF, XWPF, XSSF, OpenXml4Net, OpenXmlFormats组成，具体列表如下：

(以上内容来自百度百科）从上表可知NPOI组件已支持excel，记得之前用的时候只支持excel。很久没研究过这玩意儿了。

案例

官网地址：/，可以从官网下载NPOI2.X版本的。

首先引入

ICSharpCode.SharpZipLib.dll

NPOI.dll

NPOI.OOXML.dll

NPOI.OpenXml4Net.dll

NPOI.OpenXmlFormats.dll

然后引入命名空间：

using NPOI.XSSF.UserModel;using NPOI.SS.UserModel;using NPOI.HSSF.UserModel;

辅助类

using NPOI.XSSF.UserModel;using NPOI.SS.UserModel;using NPOI.HSSF.UserModel;using System;using System.Collections.Generic;using System.Data;using System.IO;using System.Linq;using System.Text;using System.Threading.Tasks;using NPOI.SS.Formula.Eval;namespace mon{/// <summary>/// 使用NPOI组件/// 需引入ICSharpCode.SharpZipLib.dll/NPOI.dll/NPOI.OOXML.dll/NPOI.OpenXml4Net.dll/NPOI.OpenXmlFormats.dll/// office/// </summary>public class NPOIExcelHelper{/// <summary>/// 将Excel文件中的数据读出到DataTable中/// </summary>/// <param name="file"></param>/// <returns></returns>public static DataTable Excel2DataTable(string file, string sheetName, string tableName){DataTable dt = new DataTable();IWorkbook workbook = null;using (FileStream fs = new FileStream(file, FileMode.Open, FileAccess.Read)){//office HSSFWorkbookworkbook = new XSSFWorkbook(fs);}ISheet sheet = workbook.GetSheet(sheetName);dt = Export2DataTable(sheet, 0, true);return dt;}/// <summary>/// 将指定sheet中的数据导入到datatable中/// </summary>/// <param name="sheet">指定需要导出的sheet</param>/// <param name="HeaderRowIndex">列头所在的行号，-1没有列头</param>/// <param name="needHeader"></param>/// <returns></returns>private static DataTable Export2DataTable(ISheet sheet, int HeaderRowIndex, bool needHeader){DataTable dt = new DataTable();XSSFRow headerRow = null;int cellCount;try{if (HeaderRowIndex < 0 || !needHeader){headerRow = sheet.GetRow(0) as XSSFRow;cellCount = headerRow.LastCellNum;for (int i = headerRow.FirstCellNum; i <= cellCount; i++){DataColumn column = new DataColumn(Convert.ToString(i));dt.Columns.Add(column);}}else{headerRow = sheet.GetRow(HeaderRowIndex) as XSSFRow;cellCount = headerRow.LastCellNum;for (int i = headerRow.FirstCellNum; i <= cellCount; i++){ICell cell = headerRow.GetCell(i);if (cell == null){break;//到最后跳出循环 }else{DataColumn column = new DataColumn(headerRow.GetCell(i).ToString());dt.Columns.Add(column);}}}int rowCount = sheet.LastRowNum;for (int i = HeaderRowIndex + 1; i <= sheet.LastRowNum; i++){XSSFRow row = null;if (sheet.GetRow(i) == null){row = sheet.CreateRow(i) as XSSFRow;}else{row = sheet.GetRow(i) as XSSFRow;}DataRow dtRow = dt.NewRow();for (int j = row.FirstCellNum; j <= cellCount; j++){if (row.GetCell(j) != null){switch (row.GetCell(j).CellType){case CellType.Boolean:dtRow[j] = Convert.ToString(row.GetCell(j).BooleanCellValue);break;case CellType.Error:dtRow[j] = ErrorEval.GetText(row.GetCell(j).ErrorCellValue);break;case CellType.Formula:switch (row.GetCell(j).CachedFormulaResultType){case CellType.Boolean:dtRow[j] = Convert.ToString(row.GetCell(j).BooleanCellValue);break;case CellType.Error:dtRow[j] = ErrorEval.GetText(row.GetCell(j).ErrorCellValue);break;case CellType.Numeric:dtRow[j] = Convert.ToString(row.GetCell(j).NumericCellValue);break;case CellType.String:string strFORMULA = row.GetCell(j).StringCellValue;if (strFORMULA != null && strFORMULA.Length > 0){dtRow[j] = strFORMULA.ToString();}else{dtRow[j] = null;}break;default:dtRow[j] = "";break;}break;case CellType.Numeric:if (DateUtil.IsCellDateFormatted(row.GetCell(j))){dtRow[j] = DateTime.FromOADate(row.GetCell(j).NumericCellValue);}else{dtRow[j] = Convert.ToDouble(row.GetCell(j).NumericCellValue);}break;case CellType.String:string str = row.GetCell(j).StringCellValue;if (!string.IsNullOrEmpty(str)){dtRow[j] = Convert.ToString(str);}else{dtRow[j] = null;}break;default:dtRow[j] = "";break;}}}dt.Rows.Add(dtRow);}}catch (Exception){return null;}return dt;}/// <summary>/// 将DataTable中的数据导入Excel文件中/// </summary>/// <param name="dt"></param>/// <param name="file"></param>public static void DataTable2Excel(DataTable dt, string file, string sheetName){IWorkbook workbook = new XSSFWorkbook();ISheet sheet = workbook.CreateSheet(sheetName);IRow header = sheet.CreateRow(0);for (int i = 0; i < dt.Columns.Count; i++){ICell cell = header.CreateCell(i);cell.SetCellValue(dt.Columns[i].ColumnName);}//数据for (int i = 0; i < dt.Rows.Count; i++){IRow row = sheet.CreateRow(i + 1);for (int j = 0; j < dt.Columns.Count; j++){ICell cell = row.CreateCell(j);cell.SetCellValue(dt.Rows[i][j].ToString());}}MemoryStream stream = new MemoryStream();workbook.Write(stream);byte[] buffer = stream.ToArray();using (FileStream fs = new FileStream(file, FileMode.Create, FileAccess.Write)){fs.Write(buffer, 0, buffer.Length);fs.Flush();}}/// <summary>/// 获取单元格类型/// </summary>/// <param name="cell"></param>/// <returns></returns>private static object GetValueType(XSSFCell cell){if (cell == null){return null;}switch (cell.CellType){case CellType.Blank:return null;case CellType.Boolean:return cell.BooleanCellValue;case CellType.Error:return cell.ErrorCellValue;case CellType.Numeric:return cell.NumericCellValue;case CellType.String:return cell.StringCellValue;case CellType.Formula:default:return "=" + cell.StringCellValue;}}}}

NPOIExcelHelper

参考：/Joetao/articles/3247909.html

测试结果

导入Excel，student.xlsx

导入DataTable，这里只将数据导入DataTable，导入数据库部分，就不再写了。

测试数据，向qq群里一朋友要的。大概有5w多条，lz机子是老爷机跑不起，只导出了其中的1k条。

方案二

利用office的com组件

首先添加com引用

引入命名空间

using Excel = Microsoft.Office.Interop.Excel;

Com操作Excel辅助类

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using Excel = Microsoft.Office.Interop.Excel;using System.Web.UI;using System.Web;using System.Data;namespace mon{/// <summary>/// 使用com组件操作Excel/// </summary>public class ComExcelHelper{private Excel.Application appExcel = null;private Excel.Workbook workbook = null;private Excel.Worksheet sheet = null;private DateTime dtBefore;private DateTime dtAfter;private string filePath;public string FilePath{get { return filePath; }set { filePath = value; }}private string timestamp;/// <summary>/// 以时间字符串作为保存文件的名称/// </summary>public string Timestamp{get { return timestamp; }set { timestamp = value; }}private object mValue = System.Reflection.Missing.Value;/// <summary>///是否打开Excel界面 /// </summary>public bool Visible{set{appExcel.Visible = value;}}public ComExcelHelper(){this.dtBefore = DateTime.Now;appExcel = new Excel.Application();this.dtAfter = DateTime.Now;this.timestamp = DateTime.Now.ToShortDateString().Replace("-", "") + DateTime.Now.ToShortDateString().Replace("-", "") + DateTime.Now.Second.ToString() + DateTime.Now.Millisecond.ToString();}public ComExcelHelper(string strFilePath){this.dtBefore = DateTime.Now;appExcel = new Excel.Application();this.dtAfter = DateTime.Now;this.workbook = (Excel.Workbook)appExcel.Workbooks.Open(strFilePath, mValue, false, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue);this.timestamp = DateTime.Now.ToShortDateString().Replace("-", "") + DateTime.Now.ToShortDateString().Replace("-", "") + DateTime.Now.Second.ToString() + DateTime.Now.Millisecond.ToString();}public void Dispose(){try{System.Runtime.InteropServices.Marshal.ReleaseComObject(sheet);sheet = null;workbook.Close(false, mValue, mValue);System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);workbook = null;appExcel.Quit();System.Runtime.InteropServices.Marshal.ReleaseComObject(appExcel);appExcel = null;GC.Collect();GC.WaitForPendingFinalizers();}catch (Exception ex){throw ex;}finally{foreach (System.Diagnostics.Process pro in System.Diagnostics.Process.GetProcessesByName("Excel")){if (pro.StartTime > this.dtBefore && pro.StartTime < this.dtAfter){pro.Kill();}}}System.GC.SuppressFinalize(this);}/// <summary>/// 加载Excel/// </summary>public void Load(){if (workbook == null && this.filePath != null){workbook = appExcel.Workbooks.Open(this.filePath, mValue, false, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue);}}/// <summary>/// 加载Excel/// </summary>public void Load(string strFilePath){if (workbook == null){workbook = appExcel.Workbooks.Open(strFilePath, mValue, false, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue);}}/// <summary>/// 新建工作表/// </summary>/// <param name="sheetName"></param>public void NewWorkSheet(string sheetName){sheet = workbook.Sheets.Add(workbook.Sheets[1], mValue, mValue, mValue);sheet.Name = sheetName;}/// <summary>/// 在指定的单元格插入指定的值/// </summary>/// <param name="strCell">单元格如"A4"</param>/// <param name="objValue">文本数字等值</param>public void WriteCell(string strCell, object objValue){sheet.get_Range(strCell, mValue).Value2 = objValue;}/// <summary>/// 在指定Range中插入指定的值/// </summary>/// <param name="strStartCell">Range的开始单元格</param>/// <param name="strEndCell">Range的结束单元格</param>/// <param name="objValue">文本、数字等值</param>public void WriteRange(string strStartCell, string strEndCell, object objValue){sheet.get_Range(strStartCell, strEndCell).Value2 = objValue;}/**//// <summary>/// 合并单元格，并在合并后的单元格中插入指定的值/// </summary>/// <param name="strStartCell"></param>/// <param name="strEndCell"></param>/// <param name="objValue"></param>public void WriteAfterMerge(string strStartCell, string strEndCell, object objValue){sheet.get_Range(strStartCell, strEndCell).Merge(mValue);sheet.get_Range(strStartCell, mValue).Value2 = objValue;}/**//// <summary>/// 在连续单元格中插入一个DataTable中的值/// </summary>/// <param name="strStartCell">开始的单元格</param>/// <param name="dtData">存储数据的DataTable</param>public void WriteTable(string strStartCell, System.Data.DataTable dtData){object[,] arrData = new object[dtData.Rows.Count, dtData.Columns.Count];for (int i = 0; i < dtData.Rows.Count; i++)for (int j = 0; j < dtData.Columns.Count; j++)arrData[i, j] = dtData.Rows[i][j];sheet.get_Range(strStartCell, this.GetEndCell(strStartCell, dtData.Rows.Count - 1, dtData.Columns.Count - 1)).Value2 = arrData;arrData = null;}/**//// <summary>/// 在连续单元格中插入一个DataTable并作超级链接/// </summary>/// <param name="strStartCell">起始单元格标识符</param>/// <param name="dtData">存储数据的DataTable</param>/// <param name="strLinkField">链接的地址字段</param>/// <param name="strTextField">链接的文本字段</param>public void WriteTableAndLink(string strStartCell, System.Data.DataTable dtData, string strLinkField, string strTextField){object[,] arrData = new object[dtData.Rows.Count, dtData.Columns.Count - 1];for (int i = 0; i < dtData.Rows.Count; i++){for (int j = 0; j < dtData.Columns.Count; j++){if (j > dtData.Columns.IndexOf(strLinkField))arrData[i, j - 1] = dtData.Rows[i][j];else if (j < dtData.Columns.IndexOf(strLinkField))arrData[i, j] = dtData.Rows[i][j];}}sheet.get_Range(strStartCell, this.GetEndCell(strStartCell, dtData.Rows.Count - 1, dtData.Columns.Count - 2)).Value2 = arrData;for (int i = 0; i < dtData.Rows.Count; i++)this.AddHyperLink(this.NtoL(this.LtoN(this.GetCellLetter(strStartCell)) + dtData.Columns.IndexOf(strTextField)) + System.Convert.ToString(this.GetCellNumber(strStartCell) + i), dtData.Rows[i][strLinkField].ToString() + ".htm", "点击查看详细", dtData.Rows[i][strTextField].ToString());arrData = null;}/**//// <summary>/// 为单元格设置公式/// </summary>/// <param name="strCell">单元格标识符</param>/// <param name="strFormula">公式</param>public void SetFormula(string strCell, string strFormula){sheet.get_Range(strCell, mValue).Formula = strFormula;}/**//// <summary>/// 设置单元格或连续区域的字体为黑体/// </summary>/// <param name="strCell">单元格标识符</param>public void SetBold(string strCell){sheet.get_Range(strCell, mValue).Font.Bold = true;}/**//// <summary>/// 设置连续区域的字体为黑体/// </summary>/// <param name="strStartCell">开始单元格标识符</param>/// <param name="strEndCell">结束单元格标识符</param>public void SetBold(string strStartCell, string strEndCell){sheet.get_Range(strStartCell, strEndCell).Font.Bold = true;}/**//// <summary>/// 设置单元格或连续区域的字体颜色/// </summary>/// <param name="strCell">单元格标识符</param>/// <param name="clrColor">颜色</param>public void SetColor(string strCell, System.Drawing.Color clrColor){sheet.get_Range(strCell, mValue).Font.Color = System.Drawing.ColorTranslator.ToOle(clrColor);}/**//// <summary>/// 设置连续区域的字体颜色/// </summary>/// <param name="strStartCell">开始单元格标识符</param>/// <param name="strEndCell">结束单元格标识符</param>/// <param name="clrColor">颜色</param>public void SetColor(string strStartCell, string strEndCell, System.Drawing.Color clrColor){sheet.get_Range(strStartCell, strEndCell).Font.Color = System.Drawing.ColorTranslator.ToOle(clrColor);}/**//// <summary>/// 设置单元格或连续区域的边框：上下左右都为黑色连续边框/// </summary>/// <param name="strCell">单元格标识符</param>public void SetBorderAll(string strCell){sheet.get_Range(strCell, mValue).Borders[Excel.XlBordersIndex.xlEdgeTop].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);sheet.get_Range(strCell, mValue).Borders[Excel.XlBordersIndex.xlEdgeTop].LineStyle = Excel.XlLineStyle.xlContinuous;sheet.get_Range(strCell, mValue).Borders[Excel.XlBordersIndex.xlEdgeBottom].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);sheet.get_Range(strCell, mValue).Borders[Excel.XlBordersIndex.xlEdgeBottom].LineStyle = Excel.XlLineStyle.xlContinuous;sheet.get_Range(strCell, mValue).Borders[Excel.XlBordersIndex.xlEdgeLeft].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);sheet.get_Range(strCell, mValue).Borders[Excel.XlBordersIndex.xlEdgeLeft].LineStyle = Excel.XlLineStyle.xlContinuous;sheet.get_Range(strCell, mValue).Borders[Excel.XlBordersIndex.xlEdgeRight].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);sheet.get_Range(strCell, mValue).Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;sheet.get_Range(strCell, mValue).Borders[Excel.XlBordersIndex.xlInsideHorizontal].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);sheet.get_Range(strCell, mValue).Borders[Excel.XlBordersIndex.xlInsideHorizontal].LineStyle = Excel.XlLineStyle.xlContinuous;sheet.get_Range(strCell, mValue).Borders[Excel.XlBordersIndex.xlInsideVertical].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);sheet.get_Range(strCell, mValue).Borders[Excel.XlBordersIndex.xlInsideVertical].LineStyle = Excel.XlLineStyle.xlContinuous;}/**//// <summary>/// 设置连续区域的边框：上下左右都为黑色连续边框/// </summary>/// <param name="strStartCell">开始单元格标识符</param>/// <param name="strEndCell">结束单元格标识符</param>public void SetBorderAll(string strStartCell, string strEndCell){sheet.get_Range(strStartCell, strEndCell).Borders[Excel.XlBordersIndex.xlEdgeTop].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);sheet.get_Range(strStartCell, strEndCell).Borders[Excel.XlBordersIndex.xlEdgeTop].LineStyle = Excel.XlLineStyle.xlContinuous;sheet.get_Range(strStartCell, strEndCell).Borders[Excel.XlBordersIndex.xlEdgeBottom].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);sheet.get_Range(strStartCell, strEndCell).Borders[Excel.XlBordersIndex.xlEdgeBottom].LineStyle = Excel.XlLineStyle.xlContinuous;sheet.get_Range(strStartCell, strEndCell).Borders[Excel.XlBordersIndex.xlEdgeLeft].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);sheet.get_Range(strStartCell, strEndCell).Borders[Excel.XlBordersIndex.xlEdgeLeft].LineStyle = Excel.XlLineStyle.xlContinuous;sheet.get_Range(strStartCell, strEndCell).Borders[Excel.XlBordersIndex.xlEdgeRight].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);sheet.get_Range(strStartCell, strEndCell).Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous;sheet.get_Range(strStartCell, strEndCell).Borders[Excel.XlBordersIndex.xlInsideHorizontal].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);sheet.get_Range(strStartCell, strEndCell).Borders[Excel.XlBordersIndex.xlInsideHorizontal].LineStyle = Excel.XlLineStyle.xlContinuous;sheet.get_Range(strStartCell, strEndCell).Borders[Excel.XlBordersIndex.xlInsideVertical].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray);sheet.get_Range(strStartCell, strEndCell).Borders[Excel.XlBordersIndex.xlInsideVertical].LineStyle = Excel.XlLineStyle.xlContinuous;}/**//// <summary>/// 设置单元格或连续区域水平居左/// </summary>/// <param name="strCell">单元格标识符</param>public void SetHAlignLeft(string strCell){sheet.get_Range(strCell, mValue).HorizontalAlignment = Excel.XlHAlign.xlHAlignLeft;}/**//// <summary>/// 设置连续区域水平居左/// </summary>/// <param name="strStartCell">开始单元格标识符</param>/// <param name="strEndCell">结束单元格标识符</param>public void SetHAlignLeft(string strStartCell, string strEndCell){sheet.get_Range(strStartCell, strEndCell).HorizontalAlignment = Excel.XlHAlign.xlHAlignLeft;}/**//// <summary>/// 设置单元格或连续区域水平居左/// </summary>/// <param name="strCell">单元格标识符</param>public void SetHAlignCenter(string strCell){sheet.get_Range(strCell, mValue).HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter;}/**//// <summary>/// 设置连续区域水平居中/// </summary>/// <param name="strStartCell">开始单元格标识符</param>/// <param name="strEndCell">结束单元格标识符</param>public void SetHAlignCenter(string strStartCell, string strEndCell){sheet.get_Range(strStartCell, strEndCell).HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter;}/**//// <summary>/// 设置单元格或连续区域水平居右/// </summary>/// <param name="strCell">单元格标识符</param>public void SetHAlignRight(string strCell){sheet.get_Range(strCell, mValue).HorizontalAlignment = Excel.XlHAlign.xlHAlignRight;}/**//// <summary>/// 设置连续区域水平居右/// </summary>/// <param name="strStartCell">开始单元格标识符</param>/// <param name="strEndCell">结束单元格标识符</param>public void SetHAlignRight(string strStartCell, string strEndCell){sheet.get_Range(strStartCell, strEndCell).HorizontalAlignment = Excel.XlHAlign.xlHAlignRight;}/**//// <summary>/// 设置单元格或连续区域的显示格式/// </summary>/// <param name="strCell">单元格标识符</param>/// <param name="strNF">如"#,##0.00"的显示格式</param>public void SetNumberFormat(string strCell, string strNF){sheet.get_Range(strCell, mValue).NumberFormat = strNF;}/**//// <summary>/// 设置连续区域的显示格式/// </summary>/// <param name="strStartCell">开始单元格标识符</param>/// <param name="strEndCell">结束单元格标识符</param>/// <param name="strNF">如"#,##0.00"的显示格式</param>public void SetNumberFormat(string strStartCell, string strEndCell, string strNF){sheet.get_Range(strStartCell, strEndCell).NumberFormat = strNF;}/**//// <summary>/// 设置单元格或连续区域的字体大小/// </summary>/// <param name="strCell">单元格或连续区域标识符</param>/// <param name="intFontSize"></param>public void SetFontSize(string strCell, int intFontSize){sheet.get_Range(strCell, mValue).Font.Size = intFontSize.ToString();}/**//// <summary>/// 设置连续区域的字体大小/// </summary>/// <param name="strStartCell">开始单元格标识符</param>/// <param name="strEndCell">结束单元格标识符</param>/// <param name="intFontSize">字体大小</param>public void SetFontSize(string strStartCell, string strEndCell, int intFontSize){sheet.get_Range(strStartCell, strEndCell).Font.Size = intFontSize.ToString();}/**//// <summary>/// 设置列宽/// </summary>/// <param name="strColID">列标识，如A代表第一列</param>/// <param name="decWidth">宽度</param>public void SetColumnWidth(string strColID, double dblWidth){((Excel.Range)sheet.Columns.GetType().InvokeMember("Item", System.Reflection.BindingFlags.GetProperty, null, sheet.Columns, new object[] { (strColID + ":" + strColID).ToString() })).ColumnWidth = dblWidth;}/**//// <summary>/// 为单元格添加超级链接/// </summary>/// <param name="strCell">单元格标识符</param>/// <param name="strAddress">链接地址</param>/// <param name="strTip">屏幕提示</param>/// <param name="strText">链接文本</param>public void AddHyperLink(string strCell, string strAddress, string strTip, string strText){sheet.Hyperlinks.Add(sheet.get_Range(strCell, mValue), strAddress, mValue, strTip, strText);}/**//// <summary>/// 已知开始的单元格标识，求intR行、intColumn列后的单元格标识/// </summary>/// <param name="strStartCell">开始单元格标识</param>/// <param name="intR">行数</param>/// <param name="intC">列数</param>/// <returns>单元格标识符结果</returns>public string GetEndCell(string strStartCell, int intR, int intC){string endcell = string.Empty;System.Text.RegularExpressions.Regex regex = new System.Text.RegularExpressions.Regex(@"^(?<vLetter>[A-Z]+)(?<vNumber>\d+)");if (regex.IsMatch(strStartCell)){endcell = this.NtoL(this.LtoN(regex.Match(strStartCell).Result("${vLetter}")) + intC) + System.Convert.ToString((System.Convert.ToInt32(regex.Match(strStartCell).Result("${vNumber}")) + intR));}return endcell;}/**//// <summary>/// 获取单元格标识符中的字母/// </summary>/// <param name="strCell">单元格标识符</param>/// <returns>单元格标识符对应的字母</returns>public string GetCellLetter(string strCell){System.Text.RegularExpressions.Regex regex = new System.Text.RegularExpressions.Regex(@"^(?<vLetter>[A-Z]+)(?<vNumber>\d+)");return regex.Match(strCell).Result("${vLetter}");}/**//// <summary>/// 获取单元格标识符中的数字/// </summary>/// <param name="strCell">单元格标识符</param>public int GetCellNumber(string strCell){System.Text.RegularExpressions.Regex regex = new System.Text.RegularExpressions.Regex(@"^(?<vLetter>[A-Z]+)(?<vNumber>\d+)");return System.Convert.ToInt32(regex.Match(strCell).Result("${vNumber}"));}/**//// <summary>/// 另存为xls文件/// </summary>/// <param name="strFilePath">文件路径</param>public void SaveAs(string strFilePath){workbook.SaveCopyAs(strFilePath);}/**//// <summary>/// 另存为xls文件/// </summary>/// <param name="strFilePath">文件路径</param>public void Save(){workbook.Save();}/// <summary>/// 将Excel中的数据读入DataTable中/// </summary>/// <param name="filePath">excel文件的路径</param>/// <param name="dtName">datatable的名字</param>/// <param name="headName">表头，以逗号分隔</param>/// <returns></returns>public DataTable ReadExcel2DataTable(string filePath, string dtName, string headName){workbook = this.appExcel.Workbooks.Open(filePath, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue, mValue);sheet = workbook.Worksheets.get_Item(1);DataTable dt = new DataTable(dtName);string[] heads = !string.IsNullOrEmpty(headName) ? headName.Split(',') : null;if (heads != null){for (int i = 0; i < heads.Length; i++){DataColumn column = new DataColumn(heads[i]);//这里没对类型进行处理dt.Columns.Add(column);}for (int i = 0; i <= sheet.UsedRange.Rows.Count; i++){DataRow dr = dt.NewRow();for (int j = 0; j < heads.Length; j++){string cellString = NtoL(j + 1);dr[heads[j]] = sheet.get_Range(cellString + (i + 1)).Value2;}dt.Rows.Add(dr);}}else{for (int i = 0; i <= sheet.UsedRange.Rows.Count; i++){DataRow dr = dt.NewRow();for (int j = 0; j <= sheet.UsedRange.Columns.Count; j++){dr[j + 1] = sheet.get_Range(NtoL(j + 1) + (i + 1)).Value2;}dt.Rows.Add(dr);}}return dt;}/**//// <summary>/// 另存为html文件/// </summary>/// <param name="strFilePath">文件路径</param>public void SaveHtml(string strFilePath){workbook.SaveAs(strFilePath, Excel.XlFileFormat.xlHtml, mValue, mValue, mValue, mValue, Excel.XlSaveAsAccessMode.xlNoChange, mValue, mValue, mValue, mValue, mValue);}public void CreateHtmlFile(){}/**//// <summary>/// 字母转换为数字，Excel列头，如A-1;AA-27/// </summary>/// <param name="strLetter">字母</param>/// <returns>字母对应的数字</returns>private int LtoN(string strLetter){int intRtn = 0;string strLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";if (strLetter.Length == 2)intRtn += (strLetters.IndexOf(strLetter.Substring(0, 1)) + 1) * 26;intRtn += strLetters.IndexOf(strLetter.Substring(strLetter.Length - 1, 1)) + 1;return intRtn;}/**//// <summary>/// 数字转换为字母，Excel列头，如1-A;27-AA/// </summary>/// <param name="intNumber">数字</param>/// <returns>数字对应的字母</returns>private string NtoL(int intNumber){if (intNumber > 702)return String.Empty;if (intNumber == 702)return "ZZ";string strRtn = String.Empty;string strLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";if (intNumber > 26)strRtn = strLetters.Substring(intNumber / 26 - 1, 1);strRtn += strLetters.Substring((intNumber % 26) - 1, 1);return strRtn;}}}

ComExcelHelper

参考：/waxdoll/archive//10/28/264071.html

DataTable导入Excel

Excel读入DataTable

这里未对类型进行处理，datetime类型的数据会转换成数值类型的

方案三

将Excel数据表当作数据源，通过OleDb来实现。

同样需要引入Microsoft Excel 14.0 Object Library

分享一个操作类：

1 using System; 2 using System.Collections; 3 using System.Collections.Generic; 4 using System.Data; 5 using System.Data.OleDb; 6 using System.IO; 7 using System.Linq; 8 using System.Text; 9 using System.Threading.Tasks; 10 using System.Web; 11 using System.Web.UI; 12 using System.Web.UI.WebControls; 13 14 namespace mon 15 { 16class OleDbExcelHelper 17{ 18 #region 数据导出至Excel文件 19 /// </summary> 20 /// 导出Excel文件，自动返回可下载的文件流 21 /// </summary> 22 public static void DataTable1Excel(System.Data.DataTable dtData) 23 { 24 GridView gvExport = null; 25 HttpContext curContext = HttpContext.Current; 26 StringWriter strWriter = null; 27 HtmlTextWriter htmlWriter = null; 28 if (dtData != null) 29 { 30 curContext.Response.ContentType = "application/vnd.ms-excel"; 31 curContext.Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312"); 32 curContext.Response.Charset = "utf-8"; 33 strWriter = new StringWriter(); 34 htmlWriter = new HtmlTextWriter(strWriter); 35 gvExport = new GridView(); 36 gvExport.DataSource = dtData.DefaultView; 37 gvExport.AllowPaging = false; 38 gvExport.DataBind(); 39 gvExport.RenderControl(htmlWriter); 40 curContext.Response.Write("<meta http-equiv=\"Content-Type\" content=\"text/html;charset=gb2312\"/>" + strWriter.ToString()); 41 curContext.Response.End(); 42 } 43 } 44 45 /// <summary> 46 /// 导出Excel文件，转换为可读模式 47 /// </summary> 48 public static void DataTable2Excel(System.Data.DataTable dtData) 49 { 50 DataGrid dgExport = null; 51 HttpContext curContext = HttpContext.Current; 52 StringWriter strWriter = null; 53 HtmlTextWriter htmlWriter = null; 54 55 if (dtData != null) 56 { 57 curContext.Response.ContentType = "application/vnd.ms-excel"; 58 curContext.Response.ContentEncoding = System.Text.Encoding.UTF8; 59 curContext.Response.Charset = ""; 60 strWriter = new StringWriter(); 61 htmlWriter = new HtmlTextWriter(strWriter); 62 dgExport = new DataGrid(); 63 dgExport.DataSource = dtData.DefaultView; 64 dgExport.AllowPaging = false; 65 dgExport.DataBind(); 66 dgExport.RenderControl(htmlWriter); 67 curContext.Response.Write(strWriter.ToString()); 68 curContext.Response.End(); 69 } 70 } 71 72 /// <summary> 73 /// 导出Excel文件，并自定义文件名 74 /// </summary> 75 public static void DataTable3Excel(System.Data.DataTable dtData, String FileName) 76 { 77 GridView dgExport = null; 78 HttpContext curContext = HttpContext.Current; 79 StringWriter strWriter = null; 80 HtmlTextWriter htmlWriter = null; 81 82 if (dtData != null) 83 { 84 HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8); 85 curContext.Response.AddHeader("content-disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ".xls"); 86 curContext.Response.ContentType = "application nd.ms-excel"; 87 curContext.Response.ContentEncoding = System.Text.Encoding.UTF8; 88 curContext.Response.Charset = "GB2312"; 89 strWriter = new StringWriter(); 90 htmlWriter = new HtmlTextWriter(strWriter); 91 dgExport = new GridView(); 92 dgExport.DataSource = dtData.DefaultView; 93 dgExport.AllowPaging = false; 94 dgExport.DataBind(); 95 dgExport.RenderControl(htmlWriter); 96 curContext.Response.Write(strWriter.ToString()); 97 curContext.Response.End(); 98 } 99 }100 101 /// <summary>102 /// 将数据导出至Excel文件103 /// </summary>104 /// <param name="Table">DataTable对象</param>105 /// <param name="ExcelFilePath">Excel文件路径</param>106 public static bool OutputToExcel(System.Data.DataTable Table, string ExcelFilePath)107 {108 if (File.Exists(ExcelFilePath))109 {110 throw new Exception("该文件已经存在！");111 }112 113 if ((Table.TableName.Trim().Length == 0) || (Table.TableName.ToLower() == "table"))114 {115 Table.TableName = "Sheet1";116 }117 118 //数据表的列数119 int ColCount = Table.Columns.Count;120 121 //用于记数，实例化参数时的序号122 int i = 0;123 124 //创建参数125 OleDbParameter[] para = new OleDbParameter[ColCount];126 127 //创建表结构的SQL语句128 string TableStructStr = @"Create Table " + Table.TableName + "(";129 130 //连接字符串131 string connString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFilePath + ";Extended Properties=Excel 8.0;";132 OleDbConnection objConn = new OleDbConnection(connString);133 134 //创建表结构135 OleDbCommand objCmd = new OleDbCommand();136 137 //数据类型集合138 ArrayList DataTypeList = new ArrayList();139 DataTypeList.Add("System.Decimal");140 DataTypeList.Add("System.Double");141 DataTypeList.Add("System.Int16");142 DataTypeList.Add("System.Int32");143 DataTypeList.Add("System.Int64");144 DataTypeList.Add("System.Single");145 146 //遍历数据表的所有列，用于创建表结构147 foreach (DataColumn col in Table.Columns)148 {149 //如果列属于数字列，则设置该列的数据类型为double150 if (DataTypeList.IndexOf(col.DataType.ToString()) >= 0)151 {152 para[i] = new OleDbParameter("@" + col.ColumnName, OleDbType.Double);153 objCmd.Parameters.Add(para[i]);154 155 //如果是最后一列156 if (i + 1 == ColCount)157 {158TableStructStr += col.ColumnName + " double)";159 }160 else161 {162TableStructStr += col.ColumnName + " double,";163 }164 }165 else166 {167 para[i] = new OleDbParameter("@" + col.ColumnName, OleDbType.VarChar);168 objCmd.Parameters.Add(para[i]);169 170 //如果是最后一列171 if (i + 1 == ColCount)172 {173TableStructStr += col.ColumnName + " varchar)";174 }175 else176 {177TableStructStr += col.ColumnName + " varchar,";178 }179 }180 i++;181 }182 183 //创建Excel文件及文件结构184 try185 {186 objCmd.Connection = objConn;187 mandText = TableStructStr;188 189 if (objConn.State == ConnectionState.Closed)190 {191 objConn.Open();192 }193 objCmd.ExecuteNonQuery();194 }195 catch (Exception exp)196 {197 throw exp;198 }199 200 //插入记录的SQL语句201 string InsertSql_1 = "Insert into " + Table.TableName + " (";202 string InsertSql_2 = " Values (";203 string InsertSql = "";204 205 //遍历所有列，用于插入记录，在此创建插入记录的SQL语句206 for (int colID = 0; colID < ColCount; colID++)207 {208 if (colID + 1 == ColCount) //最后一列209 {210 InsertSql_1 += Table.Columns[colID].ColumnName + ")";211 InsertSql_2 += "@" + Table.Columns[colID].ColumnName + ")";212 }213 else214 {215 InsertSql_1 += Table.Columns[colID].ColumnName + ",";216 InsertSql_2 += "@" + Table.Columns[colID].ColumnName + ",";217 }218 }219 220 InsertSql = InsertSql_1 + InsertSql_2;221 222 //遍历数据表的所有数据行223 for (int rowID = 0; rowID < Table.Rows.Count; rowID++)224 {225 for (int colID = 0; colID < ColCount; colID++)226 {227 if (para[colID].DbType == DbType.Double && Table.Rows[rowID][colID].ToString().Trim() == "")228 {229para[colID].Value = 0;230 }231 else232 {233para[colID].Value = Table.Rows[rowID][colID].ToString().Trim();234 }235 }236 try237 {238 mandText = InsertSql;239 objCmd.ExecuteNonQuery();240 }241 catch (Exception exp)242 {243 string str = exp.Message;244 }245 }246 try247 {248 if (objConn.State == ConnectionState.Open)249 {250 objConn.Close();251 }252 }253 catch (Exception exp)254 {255 throw exp;256 }257 return true;258 }259 260 /// <summary>261 /// 将数据导出至Excel文件262 /// </summary>263 /// <param name="Table">DataTable对象</param>264 /// <param name="Columns">要导出的数据列集合</param>265 /// <param name="ExcelFilePath">Excel文件路径</param>266 public static bool OutputToExcel(System.Data.DataTable Table, ArrayList Columns, string ExcelFilePath)267 {268 if (File.Exists(ExcelFilePath))269 {270 throw new Exception("该文件已经存在！");271 }272 273 //如果数据列数大于表的列数，取数据表的所有列274 if (Columns.Count > Table.Columns.Count)275 {276 for (int s = Table.Columns.Count + 1; s <= Columns.Count; s++)277 {278 Columns.RemoveAt(s); //移除数据表列数后的所有列279 }280 }281 282 //遍历所有的数据列，如果有数据列的数据类型不是 DataColumn，则将它移除283 DataColumn column = new DataColumn();284 for (int j = 0; j < Columns.Count; j++)285 {286 try287 {288 column = (DataColumn)Columns[j];289 }290 catch (Exception)291 {292 Columns.RemoveAt(j);293 }294 }295 if ((Table.TableName.Trim().Length == 0) || (Table.TableName.ToLower() == "table"))296 {297 Table.TableName = "Sheet1";298 }299 300 //数据表的列数301 int ColCount = Columns.Count;302 303 //创建参数304 OleDbParameter[] para = new OleDbParameter[ColCount];305 306 //创建表结构的SQL语句307 string TableStructStr = @"Create Table " + Table.TableName + "(";308 309 //连接字符串310 string connString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFilePath + ";Extended Properties=Excel 8.0;";311 OleDbConnection objConn = new OleDbConnection(connString);312 313 //创建表结构314 OleDbCommand objCmd = new OleDbCommand();315 316 //数据类型集合317 ArrayList DataTypeList = new ArrayList();318 DataTypeList.Add("System.Decimal");319 DataTypeList.Add("System.Double");320 DataTypeList.Add("System.Int16");321 DataTypeList.Add("System.Int32");322 DataTypeList.Add("System.Int64");323 DataTypeList.Add("System.Single");324 325 DataColumn col = new DataColumn();326 327 //遍历数据表的所有列，用于创建表结构328 for (int k = 0; k < ColCount; k++)329 {330 col = (DataColumn)Columns[k];331 332 //列的数据类型是数字型333 if (DataTypeList.IndexOf(col.DataType.ToString().Trim()) >= 0)334 {335 para[k] = new OleDbParameter("@" + col.Caption.Trim(), OleDbType.Double);336 objCmd.Parameters.Add(para[k]);337 338 //如果是最后一列339 if (k + 1 == ColCount)340 {341TableStructStr += col.Caption.Trim() + " Double)";342 }343 else344 {345TableStructStr += col.Caption.Trim() + " Double,";346 }347 }348 else349 {350 para[k] = new OleDbParameter("@" + col.Caption.Trim(), OleDbType.VarChar);351 objCmd.Parameters.Add(para[k]);352 353 //如果是最后一列354 if (k + 1 == ColCount)355 {356TableStructStr += col.Caption.Trim() + " VarChar)";357 }358 else359 {360TableStructStr += col.Caption.Trim() + " VarChar,";361 }362 }363 }364 365 //创建Excel文件及文件结构366 try367 {368 objCmd.Connection = objConn;369 mandText = TableStructStr;370 371 if (objConn.State == ConnectionState.Closed)372 {373 objConn.Open();374 }375 objCmd.ExecuteNonQuery();376 }377 catch (Exception exp)378 {379 throw exp;380 }381 382 //插入记录的SQL语句383 string InsertSql_1 = "Insert into " + Table.TableName + " (";384 string InsertSql_2 = " Values (";385 string InsertSql = "";386 387 //遍历所有列，用于插入记录，在此创建插入记录的SQL语句388 for (int colID = 0; colID < ColCount; colID++)389 {390 if (colID + 1 == ColCount) //最后一列391 {392 InsertSql_1 += Columns[colID].ToString().Trim() + ")";393 InsertSql_2 += "@" + Columns[colID].ToString().Trim() + ")";394 }395 else396 {397 InsertSql_1 += Columns[colID].ToString().Trim() + ",";398 InsertSql_2 += "@" + Columns[colID].ToString().Trim() + ",";399 }400 }401 402 InsertSql = InsertSql_1 + InsertSql_2;403 404 //遍历数据表的所有数据行405 DataColumn DataCol = new DataColumn();406 for (int rowID = 0; rowID < Table.Rows.Count; rowID++)407 {408 for (int colID = 0; colID < ColCount; colID++)409 {410 //因为列不连续，所以在取得单元格时不能用行列编号，列需得用列的名称411 DataCol = (DataColumn)Columns[colID];412 if (para[colID].DbType == DbType.Double && Table.Rows[rowID][DataCol.Caption].ToString().Trim() == "")413 {414para[colID].Value = 0;415 }416 else417 {418para[colID].Value = Table.Rows[rowID][DataCol.Caption].ToString().Trim();419 }420 }421 try422 {423 mandText = InsertSql;424 objCmd.ExecuteNonQuery();425 }426 catch (Exception exp)427 {428 string str = exp.Message;429 }430 }431 try432 {433 if (objConn.State == ConnectionState.Open)434 {435 objConn.Close();436 }437 }438 catch (Exception exp)439 {440 throw exp;441 }442 return true;443 }444 #endregion445 446 /// <summary>447 /// 获取Excel文件数据表列表448 /// </summary>449 public static ArrayList GetExcelTables(string ExcelFileName)450 {451 System.Data.DataTable dt = new System.Data.DataTable();452 ArrayList TablesList = new ArrayList();453 if (File.Exists(ExcelFileName))454 {455 using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=Excel 8.0;Data Source=" + ExcelFileName))456 {457 try458 {459conn.Open();460dt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });461 }462 catch (Exception exp)463 {464throw exp;465 }466 467 //获取数据表个数468 int tablecount = dt.Rows.Count;469 for (int i = 0; i < tablecount; i++)470 {471string tablename = dt.Rows[i][2].ToString().Trim().TrimEnd('$');472if (TablesList.IndexOf(tablename) < 0)473{474 TablesList.Add(tablename);475}476 }477 }478 }479 return TablesList;480 }481 482 /// <summary>483 /// 将Excel文件导出至DataTable(第一行作为表头)484 /// </summary>485 /// <param name="ExcelFilePath">Excel文件路径</param>486 /// <param name="TableName">数据表名，如果数据表名错误，默认为第一个数据表名</param>487 public static DataTable InputFromExcel(string ExcelFilePath, string TableName)488 {489 if (!File.Exists(ExcelFilePath))490 {491 throw new Exception("Excel文件不存在！");492 }493 494 //如果数据表名不存在，则数据表名为Excel文件的第一个数据表495 ArrayList TableList = new ArrayList();496 TableList = GetExcelTables(ExcelFilePath);497 498 if (TableName.IndexOf(TableName) < 0)499 {500 TableName = TableList[0].ToString().Trim();501 }502 503 DataTable table = new DataTable();504 OleDbConnection dbcon = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFilePath + ";Extended Properties=Excel 8.0");505 OleDbCommand cmd = new OleDbCommand("select * from [" + TableName + "$]", dbcon);506 OleDbDataAdapter adapter = new OleDbDataAdapter(cmd);507 508 try509 {510 if (dbcon.State == ConnectionState.Closed)511 {512 dbcon.Open();513 }514 adapter.Fill(table);515 }516 catch (Exception exp)517 {518 throw exp;519 }520 finally521 {522 if (dbcon.State == ConnectionState.Open)523 {524 dbcon.Close();525 }526 }527 return table;528 }529 530 /// <summary>531 /// 获取Excel文件指定数据表的数据列表532 /// </summary>533 /// <param name="ExcelFileName">Excel文件名</param>534 /// <param name="TableName">数据表名</param>535 public static ArrayList GetExcelTableColumns(string ExcelFileName, string TableName)536 {537 DataTable dt = new DataTable();538 ArrayList ColsList = new ArrayList();539 if (File.Exists(ExcelFileName))540 {541 using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=Excel 8.0;Data Source=" + ExcelFileName))542 {543 conn.Open();544 dt = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Columns, new object[] { null, null, TableName, null });545 546 //获取列个数547 int colcount = dt.Rows.Count;548 for (int i = 0; i < colcount; i++)549 {550string colname = dt.Rows[i]["Column_Name"].ToString().Trim();551ColsList.Add(colname);552 }553 }554 }555 return ColsList;556 }557}558 }

OleDbExcelHelper

网上搜集的常用类，这里不再测试。

方案四

将Excel另存为xml文件，对xml文件进行操作。

1 <Row> 2<Cell><Data ss:Type="String">998</Data></Cell> 3<Cell><Data ss:Type="String">柳雪巧</Data></Cell> 4<Cell><Data ss:Type="String">f</Data></Cell> 5<Cell><Data ss:Type="String">1971/4/30 0:00:00</Data></Cell> 6<Cell><Data ss:Type="String">/1/15 0:00:00</Data></Cell> 7<Cell><Data ss:Type="String">台湾省屏东县</Data></Cell> 8<Cell><Data ss:Type="String">Dolores19710430@</Data></Cell> 9<Cell><Data ss:Type="String">12616310511</Data></Cell>10<Cell><Data ss:Type="String">False</Data></Cell>11<Cell><Data ss:Type="String">/3/15 10:13:54</Data></Cell>12<Cell><Data ss:Type="String">5</Data></Cell>13 </Row>

excel表格中每一行数据，其实是以上格式的xml，有规律，就可以很容易的去解析。

方案五

js插件

官网地址：/extras/tabletools/

方案六

导出为csv文件

分享一个辅助类

1 using System.Data; 2 using System.IO; 3 4 public static class CsvHelper 5 { 6/// <summary> 7/// 导出报表为Csv 8/// </summary> 9/// <param name="dt">DataTable</param>10/// <param name="strFilePath">物理路径</param>11/// <param name="tableheader">表头</param>12/// <param name="columname">字段标题,逗号分隔</param>13public static bool dt2csv(DataTable dt, string strFilePath, string tableheader, string columname)14{15 try16 {17 string strBufferLine = "";18 StreamWriter strmWriterObj = new StreamWriter(strFilePath,false,System.Text.Encoding.UTF8);19 strmWriterObj.WriteLine(tableheader);20 strmWriterObj.WriteLine(columname);21 for (int i = 0; i < dt.Rows.Count; i++)22 {23 strBufferLine = "";24 for (int j = 0; j < dt.Columns.Count; j++)25 {26 if (j > 0)27strBufferLine += ",";28 strBufferLine += dt.Rows[i][j].ToString();29 }30 strmWriterObj.WriteLine(strBufferLine);31 }32 strmWriterObj.Close();33 return true;34 }35 catch36 {37 return false;38 }39}40 41/// <summary>42/// 将Csv读入DataTable43/// </summary>44/// <param name="filePath">csv文件路径</param>45/// <param name="n">表示第n行是字段title,第n+1行是记录开始</param>46public static DataTable csv2dt(string filePath, int n, DataTable dt)47{48 StreamReader reader = new StreamReader(filePath, System.Text.Encoding.UTF8, false);49 int i = 0, m = 0;50 reader.Peek();51 while (reader.Peek() > 0)52 {53 m = m + 1;54 string str = reader.ReadLine();55 if (m >= n + 1)56 {57 string[] split = str.Split(',');58 59 System.Data.DataRow dr = dt.NewRow();60 for (i = 0; i < split.Length; i++)61 {62 dr[i] = split[i];63 }64 dt.Rows.Add(dr);65 }66 }67 return dt;68}69 }

View Code

不再测试。