新版本的xlsx是使用新的存储格式,貌似是处理过的XML。
传统的excel处理方法,我真的感觉像屎。用Oldeb不方便,用com组件要实际调用excel打开关闭,很容易出现死。
对于OpenXML我网上搜了一下,很多人没有介绍。所以我就这里推荐下,相信会成为信息系统开发的必备。
先写出个例子,会发现如此的简介:
using System; using System.Collections.Generic; using System.Text; using XFormular.config; using System.IO; using com.xtar.amfx; using System.Runtime.Serialization.Formatters.Binary; using System.Data; namespace XFormular.test { class Class1 { public void test() { DataTable table = new DataTable("1"); table.Columns.Add("2"); for (int i = 0; i < 10; i++) { DataRow row = table.NewRow(); row[0] = i; table.Rows.Add(row); } List<DataTable> lsit = new List<DataTable>(); lsit.Add(table); OpenXmlSDKExporter.Export(AppDomain.CurrentDomain.BaseDirectory + "\\excel.xlsx", lsit); } } }
写出代码:
using System; using System.IO; using System.Windows.Forms; using DocumentFormat.OpenXml; using DocumentFormat.OpenXml.Packaging; using DocumentFormat.OpenXml.Spreadsheet; using DocumentFormat.OpenXml.Extensions; using System.Collections.Generic; using System.Data; using System.Text.RegularExpressions; namespace XFormular { //http://simpleooxml.codeplex.com/ //http://www.pin5i.com/showtopic-21817.html //http://blog.csdn.net/lbj147123/article/details/6603942 class OpenXmlSDKExporter { private static string[] Level = {"A", "B", "C", "D", "E", "F", "G", "H", "I", "G", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" }; public static List<DataTable> Import(string path) { List<DataTable> tables = new List<DataTable>(); if (path.EndsWith(ExcelHelper.POSTFIX_SVN)) return tables; using (MemoryStream stream = SpreadsheetReader.StreamFromFile(path)) { using (SpreadsheetDocument doc = SpreadsheetDocument.Open(stream, true)) { foreach (Sheet sheet in doc.WorkbookPart.Workbook.Descendants<Sheet>()) { DataTable table = new DataTable(sheet.Name.Value); WorksheetPart worksheet = (WorksheetPart)doc.WorkbookPart.GetPartById(sheet.Id); List<string> columnsNames = new List<string>(); foreach (Row row in worksheet.Worksheet.Descendants<Row>()) { foreach (Cell cell in row) { string columnName = Regex.Match(cell.CellReference.Value, "[a-zA-Z]+").Value; if (!columnsNames.Contains(columnName)) { columnsNames.Add(columnName); } } } columnsNames.Sort(CompareColumn); foreach (string columnName in columnsNames) { table.Columns.Add(columnName); } foreach (Row row in worksheet.Worksheet.Descendants<Row>()) { DataRow tableRow = table.NewRow(); table.Rows.Add(tableRow); foreach (Cell cell in row) { string columnName = Regex.Match(cell.CellReference.Value, "[a-zA-Z]+").Value; tableRow[columnName] = GetValue(cell, doc.WorkbookPart.SharedStringTablePart); } } if (table.Rows.Count <= 0) continue; if (table.Columns.Count <= 0) continue; tables.Add(table); } } } return tables; } public static String GetValue(Cell cell, SharedStringTablePart stringTablePart) { if (cell.ChildElements.Count == 0) return null; //get cell value String value = cell.CellValue.InnerText; //Look up real value from shared string table if ((cell.DataType != null) && (cell.DataType == CellValues.SharedString)) value = stringTablePart.SharedStringTable .ChildElements[Int32.Parse(value)] .InnerText; return value; } public static void Export(string path, List<DataTable> tables) { using (MemoryStream stream = SpreadsheetReader.Create()) { using (SpreadsheetDocument doc = SpreadsheetDocument.Open(stream, true)) { SpreadsheetWriter.RemoveWorksheet(doc, "Sheet1"); SpreadsheetWriter.RemoveWorksheet(doc, "Sheet2"); SpreadsheetWriter.RemoveWorksheet(doc, "Sheet3"); foreach (DataTable table in tables) { WorksheetPart sheet = SpreadsheetWriter.InsertWorksheet(doc, table.TableName); WorksheetWriter writer = new WorksheetWriter(doc, sheet); SpreadsheetStyle style = SpreadsheetStyle.GetDefault(doc); foreach (DataRow row in table.Rows) { for (int i = 0; i < table.Columns.Count; i++) { string columnName = SpreadsheetReader.GetColumnName("A", i); string location = columnName + (table.Rows.IndexOf(row) + 1); writer.PasteText(location, row[i].ToString(), style); } } writer.Save(); } SpreadsheetWriter.StreamToFile(path, stream);//保存到文件中 } } } private static int CompareColumn(string x, string y) { int xIndex = Letter_to_num(x); int yIndex = Letter_to_num(y); return xIndex.CompareTo(yIndex); } /// <summary> /// 数字26进制,转换成字母,用递归算法 /// </summary> /// <param name="value"></param> /// <returns></returns> private static string Num_to_letter(int value) { //此处判断输入的是否是正确的数字,略(正在表达式判断) int remainder = value % 26; //remainder = (remainder == 0) ? 26 : remainder; int front = (value - remainder) / 26; if (front < 26) { return Level[front - 1] + Level[remainder]; } else { return Num_to_letter(front) + Level[remainder]; } //return ""; } /// <summary> /// 26进制字母转换成数字 /// </summary> /// <param name="letter"></param> /// <returns></returns> private static int Letter_to_num(string str) { //此处判断是否是由A-Z字母组成的字符串,略(正在表达式片段) char[] letter = str.ToCharArray(); //拆分字符串 int reNum = 0; int power = 1; //用于次方算值 int times = 1; //最高位需要加1 int num = letter.Length;//得到字符串个数 //得到最后一个字母的尾数值 reNum += Char_num(letter[num - 1]); //得到除最后一个字母的所以值,多于两位才执行这个函数 if (num >= 2) { for (int i = num - 1; i > 0; i--) { power = 1;//致1,用于下一次循环使用次方计算 for (int j = 0; j < i; j++) //幂,j次方,应该有函数 { power *= 26; } reNum += (power * (Char_num(letter[num - i - 1]) + times)); //最高位需要加1,中间位数不需要加一 times = 0; } } //Console.WriteLine(letter.Length); return reNum; } /// <summary> /// 输入字符得到相应的数字,这是最笨的方法,还可用ASIICK编码; /// </summary> /// <param name="ch"></param> /// <returns></returns> private static int Char_num(char ch) { switch (ch) { case 'A': return 0; case 'B': return 1; case 'C': return 2; case 'D': return 3; case 'E': return 4; case 'F': return 5; case 'G': return 6; case 'H': return 7; case 'I': return 8; case 'J': return 9; case 'K': return 10; case 'L': return 11; case 'M': return 12; case 'N': return 13; case 'O': return 14; case 'P': return 15; case 'Q': return 16; case 'R': return 17; case 'S': return 18; case 'T': return 19; case 'U': return 20; case 'V': return 21; case 'W': return 22; case 'X': return 23; case 'Y': return 24; case 'Z': return 25; } return -1; } } }
using System; using System.Collections.Generic; using System.Text; using System.Data; using System.Data.OleDb; namespace xtar_biz_codegen { class ExcelHelper { public static string POSTFIX_97 = "XLS"; public static string POSTFIX_03 = "XLSX"; } }
最后附送一个项目文件,可以自己测试:
http://pan.baidu.com/s/1msFuY